Bulk Reef Supply

BRS GFO & Carbon Reactor - Dual

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BRS GFO & Carbon Reactor - Dual

SKU: 204181

In stock


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BRS GFO & Carbon Reactor - Dual with Sicce Syncra 1.5 Pump

SKU: 300181

In stock


- +

Easy to use, setup and maintain. Perfect for utilizing GFO and Carbon in the aquarium. No annoying thumb screws and leaky lids like other reactors. BRS recommends a Sicce Syncra 1.5 pump to operate this reactor. Sold separately or packaged with the pump. Choose a different pump depending on mounting height and amount of media used. Not for use with biopellet media.


The Dual BRS GFO and Carbon Reactor features several distinct advantages over other brands.

  • Ultra-transparent media cartridge allows for clear viewing of reactor media
  • Heavy duty plastic construction.
  • 1/2" Push Connect fittings and ports throughout reduce head pressure and provide ample flow rates.
  • High quality easy to use double O-Ring push- connect fittings.
  • Easy to operate, clean and maintain.
  • High quality ball valve for precise tuning.
  • Ability to run carbon and GFO at the same time.
  • (2) 3 Ft. sections of tubing
  • Holds three cups of carbon (Aprox. 300g) or two cups of GFO (Aprox 290g) per canister
  • Not for use with Biopellet Media
  • Dimensions: 14.5"H x 14"W x 5.25"
  • Sicce Syncra 1.5 Dimensions - 4" H x 2.4" W x 3.1" H
  • Pump (optional) and media sold separately


The BRS GFO & Carbon Reactors use 1/2" Push Connect fittings and 1/2" Mur-Lok Polyethylene Tubing


What's Included?



  • BRS Media Reactor - Dual (2x 10" Canister Housings)
  • 1x 1/2" Push-Connect Union
  • 6ft (2x 3ft sections) 1/2" RO tubing
  • 1x 1/2" QC Ball Valve
  • 1x RO Canister Wrench
  • 2x 10" Refillable Media Cartridge
  • 1 Year BRS Warranty



  • 1x Syncra 1.5 Reactor Pump
  • 1x 1/2" NPT x 1/2" Push-Connect Fitting
More Information
Reactor Placement In Sump, Wall Mount
Media Capacity 3 Cups / 710mL
Warranty 1 Year
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Product Questions

Can you add BIO Pellets to this reactor in conjunction with carbon? I have a nitrate issue and its hard to keep aligned.
Question by: Brenden Gaxiola on Dec 5, 2023, 9:22 AM
Hi there, great question. I would not recommend using them both at the same time with this reactor. They both will require different flow rates to work properly.
Answer by: Grace (BRS Staff) on Jan 25, 2024, 11:48 AM
Hi, I have a 65g long. at the moment, I don't have high enough phosphates to run GFO but would like to have the dual reactor in case I need it in the future. Can I put filter floss in one canister and carbon in the other? Also, how do I determine placement since I don't have a sump.

Question by: Zoraida G. on Jun 12, 2023, 5:40 PM
We do not recommend putting filter floss in a reactor. You can just run one canister empty for the time being. As far as placement, this would be ideally mounted next to the tank if you do not have a sump.
Answer by: Ash (BRS Staff) on Jun 16, 2023, 8:33 AM
I want to use GFO/carbon in my tank together for my 200 gallon. Should I use a single or a duel?
Question by: MIGUEL VILLALOBOS on Apr 27, 2023, 6:46 PM
Thanks for the question! For a tank of this size, we would recommend a dual reactor to have enough capacity for both GFO and Carbon.
Answer by: Kyle Thomas (BRS Staff) on Apr 28, 2023, 10:59 AM
I have a dual reactor now, am I able to use one canister with gfo/carbon and the other canister with biopellets
Question by: Greg on Aug 12, 2022, 7:56 AM
Hey there,
Thank you for reaching out to us. Yes, you can, just make sure you are getting the proper flow.

Please let me know if you need anything further and take care!
Answer by: Matt Lucero (BRS Staff) on Aug 12, 2022, 2:14 PM
BRS’s education on media reactors states that GFO reactors require higher flow rates to tumble the media, whereas carbon requires slower flow to avoid tumbling and breaking up the softer carbon media. Although I like the convenience of the duel reactor, doesn’t this suggest that two single, separately plumbed reactors would be required?
Question by: Tom Young on Aug 2, 2022, 6:41 AM
Hey there,
Thank you for reaching out to us. Generally you can achieve this with the GFO being first and the carbon being second as it is receiving a slower flow rate, you can also use the sponges to keep the carbon from tumbing.

Please let me know if you need anything further and take care!
Answer by: Matt Lucero (BRS Staff) on Aug 2, 2022, 2:05 PM
I’m looking to run this dual reactor plus a pentair 25w on a single pump with a manifold / split line. What size sicce do you recommend for that setup? Running on a Red Sea G2 625. Thx!
Question by: Jason on Jul 5, 2022, 7:37 PM
Thanks for the question! Assuming you want flexibility to run this at suggested 788gph for algae/bacteria, you'll want to look at the Sicce Syncra Silent 5.0 to get about 1100gph if you want an AC pump. If you are looking for a DC pump, then we'd recommend the Sicce Syncra SDC 6.0 pump for this manifold. Let us know if we can help with anything else!
Answer by: Kyle Thomas (BRS Staff) on Jul 8, 2022, 1:51 PM
What side do I mount the pump to? The GFO or the Carbon?
Question by: Lewis on Jul 4, 2022, 5:00 PM
Thanks for the question! The pump will feed into the GFO side of the reactor and water will exit the Carbon side of the reactor. Let us know if we can help with anything else!
Answer by: Kyle Thomas (BRS Staff) on Jul 6, 2022, 10:43 AM
I purchased this quite some time ago and am going to re-start a tank and use it. Is there a link to the product instructions/parts list that I could access? Thanks!
Question by: Andrew Hill on Jan 19, 2022, 9:27 AM
Answer by: James Johnson (BRS Staff) on Jan 21, 2022, 3:32 PM
What size threads on the dual reactor? I want to separate them and need 2 90° I know 1/2 hose but not sure of the thread size
Question by: Cary Wagner on Dec 20, 2021, 9:47 AM
Thanks for reaching out to us. The BRS reactors use half inch threaded ports for the intake and output.
Let me know if you have any other questions, and have a great day.
Answer by: Chad (BRS Staff) on Dec 21, 2021, 11:59 AM
Hi I recently received this product and noticed the pump that came with the product has no way to connect to the reactor itself. I was wondering if there was supposed to be pump accessories in my box that are not there? If not how do you recommend I connect the tubing to the pump. I currently have a 240 GPH lifeguard Quiet one pro 800 that has an outlet with the exact same size as the tubing and I used the push connect fitting to connect it for now, but I'd like to use the pump I purchased with the equipment as I typically use the other pump for something else.
Question by: Tristan Smith on Sep 13, 2020, 1:43 AM
It should have come with an NPT fitting that you use to push connect the tubing.
Answer by: Matt Lucero (BRS Staff) on Nov 5, 2021, 9:38 AM
I have a dual brs Carbon gfo reactor and purchased a syncra 1.5 pump. What fitting do I use to connect it to the provided tubing?
Question by: Kirk on May 13, 2020, 2:11 PM
During the process of re-plumbing my system I wanted to flip the flow of the Canisters. I have removed the Canisters from the mount and rotated them. Do I need to make sure the GFO is run prior to Carbon?
Question by: Mitchell Terry on Apr 6, 2020, 7:44 PM
Hi Mitchell,

It does not matter what media you place first since the flow through the canisters will be the same. That being said, running the carbon first will help prevent detritus from clogging the GFO over time.

I hope this helps!
Happy Reefing
Answer by: Nick on Apr 9, 2020, 4:41 PM
On the brs dual should you run the gfo or the carbon first
Question by: Nick on Mar 7, 2020, 7:24 PM
Hi there,

GFO will be first in the reactor and then carbon. It will be noted on the reactor too with a sticker.

Take care
Answer by: Thomas Billington on Mar 11, 2020, 11:17 AM
Hey am still new to the hobby. I am looking to purchase the reactor with the sicce pump. What media do you recommend and is there anything additional I need to purchase? Could I use this in the future to add nitrate removal pellets
Question by: Steven Kennedy on Feb 6, 2020, 1:36 PM
Hey there,

You would need to add a carbon and GFO of your choice. We do not intend this to be used with any other kinds of media.

Take care
Answer by: Thomas Billington on Feb 6, 2020, 1:55 PM
Can you use this without a sump?
Question by: Joe Carreiro on Feb 5, 2020, 12:25 PM
Yes you definitely can! You just need a feed pump inside the tank itself!

Take care
Answer by: Thomas Billington on Feb 5, 2020, 2:42 PM
I’m setting up a 70 gallon system. Should I run the dual reactor right away. Or wait till it’s fully cycled. I’ll be cycling with dr. Tim’s one and only.

Also I’ll be running the reactor off a manifold where should I put the return line on the sump. My sump set up goes Skimmer, Refugium, then return.
Question by: Ken Law on Dec 6, 2019, 6:45 AM
Hey there!

The carbon can start running during the cycle but I would not do GFO until the tank is cycled and you know you have high enough phosphates to use GFO. If you use it with barely any phosphates you will strip the tank.

Take care
Answer by: Thomas Billington on Dec 6, 2019, 11:42 AM
I would like to run these online with a UV light, is that ok to do and what pump would I use?
Question by: Paul Jensen on Mar 19, 2019, 7:03 AM
This is ok to do but I would not recommend it as if it got clogged you could damage your UV which is expensive. I recommend having the UV on its own pump to keep a steady flow.
Answer by: Tyler Schafer on Mar 25, 2019, 9:20 AM
I am trying to locate extra media cartridges for this unit. Thanks
Question by: Chad kiper on Jan 30, 2019, 2:51 PM
Thanks for contacting BRS!
We do sell extra media cartridges for this reactor and they can be found at the link below. Have a great day!

Answer by: Noah on Feb 5, 2019, 11:54 AM
Is it possible to hang on back of display tank?
Question by: Fredrick on Dec 9, 2018, 11:02 PM
Hey there!

You certainly can! Just use the pump in the tank and it will pump water up and over your glass, through the reactor and back into the tank!
Answer by: Thomas Billington on Dec 10, 2018, 1:18 PM
Hi - I am looking to replace my phosban reactor that keeps leaking and is difficult to clean. The BRS system looks great, but what are the major differences between the standard version and the deluxe versions you produce? Thank you!
Question by: BrianL on Jan 18, 2018, 12:50 PM
The biggest differences besides the way they look are that the mounting bracket is molded into the head for extra strength over the standard ones that are screwed in with nylon screws. The Deluxe reactor also has the push connect fittings molded into the head, where the standard uses 1/2" NPT to 1/2" Push Connect adapters making it a slight bit wider than the deluxe models. Other than that they both function and perform the same.
Answer by: Charlie on Jan 25, 2018, 4:08 PM
Can you use seachem’s denitrator in the GFO canister?
Question by: Mark on Jan 14, 2018, 7:31 PM
Yes, you can replace the GFO with the Seachem Denitrate media. It is important to follow the flow recommendations and try to find a happy medium between the carbon and seachem media.
Answer by: Charlie on Jan 17, 2018, 4:47 PM
Do you carry replacement sponges?
Question by: Glenn Bailey on Jan 10, 2018, 5:43 PM
Thanks for contacting BRS!
Here is a link to the hard shell reactor replacement pads.


Have a great day!
Answer by: Josh Cuta on Jan 11, 2018, 6:52 PM
what size tubeing is in kit thank you
Question by: ed svejkovsky on Jan 5, 2018, 1:37 AM
Thanks for contacting BRS!
The dual reactor comes with 1/2" tubing. Have a great day.
Answer by: Josh Cuta on Jan 11, 2018, 11:23 AM
Can pump be installed on either side of Reactor?

Does it matter which media flow hours through first?

How does it flow through each, outside down to bottom then up middle?
Question by: Mark on Oct 28, 2017, 8:57 AM
HI Mark, thanks for reaching out!

The reactor has labeled "IN" and "OUT" ports but you can flip the bracket if you require the feed pump to be on the opposite side.

It does not matter which media is placed in the first canister but many people find it easier to tumble their GFO by placing it in the first canister and holding their carbon between sponges in the second.

When run as recommended, the water flows into the reactor, down around the outside of the refillable canister and then up through the bottom of the canister.
Answer by: Nick on Nov 17, 2017, 8:49 AM
Hi, I've been having problems with mine leaking at the 0 rings. Do you have replacements for the rubber 0 rings?
Question by: Elly Jocham on Sep 22, 2017, 12:40 PM
Hey there,
Thanks for getting in touch with us in regards to your leaking reactor. We do have replacement O-Rings for those canisters. I have included a link below to this item. Please let me know if there is anything else that we can assist with. Thanks!

Answer by: Tyler Schafer on Oct 1, 2017, 12:01 PM
Can you run Phosgaurd in these?
Question by: John Sullivan on Sep 6, 2017, 10:48 PM
Hey there,
Thanks for getting in touch with us in regards to using Phosguard in our reactors. These would be great for use with Phosguard. Please let me know if there is anything else that we can assist with. Thanks!
Answer by: Tyler Schafer on Sep 24, 2017, 2:20 PM
I need some new tubing for my reactor. What size tubing could I buy and ifni could buy them on BRS that would be ideal.
Question by: Jordan on Jun 6, 2017, 9:59 PM
Hey there,

We do sell extra tubing for our reactors. This is sold as 1/2" Mur-Lok RO tubing.


Have a great day!
Answer by: Zack on Jun 13, 2017, 4:43 PM
In a single carbon or gfo reactor such as the brs brand can I use bio pellets on them or not
Question by: Jayden Marrero on Jun 6, 2017, 8:19 PM
In a single canister reactor, these can be used for biopellets, but we don't recommend running them in the dual reactor due to tuning issues. If you run biopellets, just don't use the sponges as this can reduce the water flow over time.

Happy reefing!
Answer by: Zack on Jun 13, 2017, 4:24 PM
I just purchased one of these and was wondering if I could hard plumb it from my return pump instead of using the pump it comes with.
Question by: Tom on May 29, 2017, 7:25 PM
You absolutely can! Canisters come with NPT threaded ports and the fittings can be replaced if you wish to plumb directly to the filters.

Have a great day!
Answer by: Zack on Jun 7, 2017, 1:37 PM
I see you sell extra cartridges for hte 5 inch reactor, do you sell extra cartridges for this 10 inch reactor?
Question by: John Kaplan on May 10, 2017, 8:38 AM
Hey there,
We sure do! You can purchase replacement hard-shell cartridges for our reactors at the link below!


Happy reefing!
Answer by: Zack on May 14, 2017, 2:21 PM
How would you go about hard plumbing this? I assume unscrew the push---->mpt fitting and insert pvc fitting i there? What size would that be?
Question by: John Hendrickson on May 8, 2017, 10:05 PM
Hey there,
If you would like to hard-plumb your reactors, you can certainly plumb directly to the canisters using 1/2" npt fittings.

Have a great day!
Answer by: Zack on May 12, 2017, 4:05 PM
I believe I've gone through all the questions but I haven't seen an answer to mine. Is there a way to flush out just the GFO? Would flushing out the GFO through the carbon clog it up? Or should the GFO be flushed out separately before adding to the reactors?
Question by: Jonathan Lobo on Apr 29, 2017, 10:21 AM
Hey there,
Whether you are using one media or both, it's totally fine to flush your media prior to running on the tank. We prefer to do so after the media is inside of the reactor by turning it on and running the initial output into a bucket. We demonstrate this briefly in a video at the link below.

https://www.youtube.com/watch?v=ezQfrJeVZXQ (media flush is around the 4 minute mark).

Hope this helps!
Answer by: Zack on May 2, 2017, 10:31 AM
I have the BRS Dual Reactor do you have a plumbing adapter that will take the hose the is supplied with the reactor and attach it to 3/4" PVC plumbing so it can be added into my existing plumbing?
Question by: Ryan Spelman on Feb 9, 2017, 11:49 AM
Hey there! Below are links to the products we use to reduce a 3/4" fitting to 1/2" and to add a push connect fitting for use with our reactors. :-)

Schedule 80 Reducing Bushing 3?4” Spigot x 1?2” Slip

1?2" Male NPT x 1?2" Push Connect
Answer by: Randy on Feb 9, 2017, 2:30 PM
How much carbon and gfo for a 125 with a 40g sump
Question by: Ricky Goodwin on Jan 17, 2017, 6:12 PM
Great question! We have the perfect tool available to help you with questions just like this! If you haven't already, check out the BRS Calculator located in the link below. :-)

From my calculations, you would need about 2 cups of Standard GFO and 0.81 cups of ROX 0.8 Carbon.

Answer by: Randy on Jan 17, 2017, 6:40 PM
OK Im needing the orings for this unit and couldn't local it can you send me a link by the way love the unit
Question by: Drexter Istre on Dec 16, 2016, 11:34 PM
Answer by: Randy Russell on Dec 21, 2016, 3:20 PM
Can I run biopellet in here, in both canisters
Question by: Anthony Bolouri-Rad on Dec 12, 2016, 2:32 PM
Great question! We actually answer that question in the video below! Worth checking it out. :-)

Answer by: Randy on Dec 13, 2016, 11:07 AM
I need replacement O-rings for the BRS GFO/Carbon media reactors - do you sell them? If not, can you tell me what size they are?
Question by: Cheryl, on Dec 10, 2016, 10:12 PM
Great question! Here is a link to the o-rings that will fit our reactors. :-)

Answer by: Randy on Dec 21, 2016, 6:39 PM
I have a fish and reef tank 45 g/ fluval 206 canister filter/ Octo skimmer, but no sump. Running for 3 years. Can this be set up under tank and does it come with tubing set up for that? I'm planning on upgrading to a 125 or 150 g in near future so will this still be effective in a larger tank as well?
Question by: Angela on Dec 9, 2016, 12:11 AM
Great question! You can utilize this under your tank, however you may need a more powerful pump to account for the head height of pushing water down and back up into the aquarium. For this, I would recommend a Sicce 1.5. :-)

Answer by: Randy on Dec 9, 2016, 9:33 AM
I want to use an external pump to run these dual canisters, what size pump will I need?
Question by: Carlos Feliciano on Dec 2, 2016, 6:26 PM
Great question! A pump with a minimum of 300GPH would be necessary to effectively tumble GFO and provide proper flow through the carbon chamber. :-)
Answer by: Randy on Dec 13, 2016, 8:56 PM
What kind of flow should this unit be pushing (gph)? I've got about 300gallons of total water volume and am sitting at about 56gph through the reactor. I've got about 1.5 cups of GFO and Carbon now, as I didn't want to pack them any higher even though they are noted to hold 2 cups. GFO wouldn't be able to tumble based on what it looks like.
Question by: LogTech on Dec 2, 2016, 8:26 AM
Great question! Flow rating will be dependent on how much media is needed for tank water volume. Although there is no minimum/maximum GPH rating for these, the proper flow will be determined by the tumbling of the GFO. As long as your GFO is lightly tumbling, you have the proper GPH. :-)
Answer by: Randy on Dec 2, 2016, 8:48 AM
Just cleaned the dual reactor started it up not working correctly. There is a lot of air in it. How do I fix this ?
Question by: john trapp on Nov 7, 2016, 10:43 AM
Great question! One of the best ways to get the air out would be to lightly crack open the canisters while the system is running. That should release the air pockets. :-)
Answer by: Randy on Nov 7, 2016, 10:48 AM
So I bought the dual reactor and I'm putting a 3 stage sump on my tank. What part of sump should I put the feed pump for the reactor and should I feed it into the refugium section or into the final stage of the sump? Thank you for your help!
Question by: Jason Mahnke on Aug 25, 2016, 9:36 PM
Thanks for reaching out to us! I would place the feed pump in the first chamber and have it drain into the return pump chamber. :-)
Answer by: Randy on Aug 26, 2016, 3:12 PM
can i run this dual reactor using one of my extra valves from my return pump as i install extra gate valves? or do ii have to use a separate pump?
Question by: ken sugzda on Jul 11, 2016, 5:20 PM
Hi Ken,
The dual reactors can be run off of your return pump. You will just need to convert down to ½” female NPT threads and then with the fitting in the link below (sku 100003) will thread into your return plumbing and allow the push connect tubing to be used with the reactor.
Answer by: Charlie on Jul 12, 2016, 7:15 AM
I need to replaced the elbows on the reactor what size do I need?
Question by: Justin Rivera on Jul 8, 2016, 6:03 AM
The elbows that attach directly to the head of the canister are ½” Stem x Push Connect Elbows. All the fittings on the BRS dual reactor will be ½”.
Answer by: Charlie on Jul 8, 2016, 7:45 AM
Can you use purigen in one chamber instead of carbon along with gfo in the other chamber? How would that affect a 75g reef?
Question by: Josh on Jun 20, 2016, 4:32 AM
There is no reason you cant use purigen in the reactor as well. Will simply run the media in a reactor style. Typically you will want GFO first to adjust the tumble correctly.
Answer by: Connor on Jun 21, 2016, 5:40 PM
Will the pump that comes with this reactor work for a 500 gallon tank? Or is it best to use it in the sump?
Question by: King on Jun 5, 2016, 5:29 PM
The pump is rather small and not recommended for large head height. We recommend running from the sump instead.
Answer by: Connor on Jun 9, 2016, 3:18 PM
I currently own this reactor and really like it! I noticed it resembles a simplified RO/DI unit and was wondering if it's possible to convert my old RO unit into another reactor similar to this one. (I try to recycle and reuse old equipment as much as possible
Question by: Shara Armstrong on May 9, 2016, 8:46 PM
Great question! While there certainly is some resemblance, the fittings used for our RO units are 1/4" while the reactor uses 1/2" to allow for greater flow. Unfortunately because the ports on the RO housings are only 1/4" you likely won't be able to get enough flow enable useful function as a reactor.
Answer by: Carter on May 10, 2016, 5:32 PM
I am currently running a dual reactor with GFO and carbon. I am considering running bio pellets instead. Would it need to Br modified and what would you suggest I run in the second chamber?

Thanks for your help

Question by: Bill Ramey on May 9, 2016, 8:01 AM
Great question!
Depending on your system size we do not recommend running bio pellets in the standard dual reactor. This would clog very quickly and not feed the correct number of pellets. We recommend a dedicated bio pellet reactor instead.
Answer by: Connor on May 11, 2016, 5:37 PM
Hi Guys,

I have some questions on the BFS dual GFO and Carbon reactor. Which one is best for my size tank..

I have a 75 G reef with a sump under the tank in the cabinets... I have room for the reactor next to the sump I have limited space inside the sump with my skimmer etc.

So, can the reactor sit outside the sump and how big of a pump will be needed and the dimensions of that pump so I can be sure the pump will fil in the sump...

If you could give me that info I'll get it ordered.

Question by: James on May 8, 2016, 12:11 PM
Great question!
The dual reactor will work perfect and easily can be mounted in the sump or externally mounted to the outside or wall of the stand. If the reactor will be within the 2-3 feet of tubing included we recommend the Cobalt Mj1200 pump which is very small only 4x 2x 4 inches. Feel free to let us know if you have any further questions!
Answer by: Connor on May 10, 2016, 6:00 PM
I bought the brs 2 chamber rector. The gfo/carbon. I have a top fin power head 50. Qmax:171.73 gph max height is 4.75ft the pump is only going to push it up 2ft is this enough power or will I have to purchase a new pump.
Question by: Billy on May 5, 2016, 4:50 PM
Great question! We recommend a more powerful pump that will supply around 300GPH, here is the pump we recommend: https://www.bulkreefsupply.com/cobalt-mj1200-powerhead.html
Answer by: Carter on May 6, 2016, 11:45 AM
I have this reactor. I find it really hard to disconnect the tubing from the push connect fittings. I need to disconnect the tubing whenever I change media so I can connect a longer outlet tube to drain into a waste bucket. Is there a trick to disconnecting the push connectors? I know you have to push in the connector but it is hard. I tried cutting a ring of pvc pipe to fit around the tubing to use to push in the connector, that helps a little, but it is still hard. Do they make a tool to do this?
Question by: Michael Ryeburn on May 2, 2016, 11:48 AM
Great question!
I have included a simple link below for the instructions on removing the fittings but it sounds as if you already know the general way to disconnect them.
I have included a few items below which can be added to the tubing to make it easy to disconnect which not dealing with the mur lok fitting.

1/2" Female Thread Cam Lever Coupling - D
SKU: 209945

1/2" Female Thread Cam Lever Adapter - A
SKU: 209927

1?2" Male NPT x 1?2" Push Connect ( you will need 2)
SKU: 100003

Answer by: Connor on May 3, 2016, 6:37 PM
I am in the process of setting up a 150g tall reef. Would these reactors be able to handle this size tank with a medium to mid heavy bioload?
Question by: Mynor on Apr 24, 2016, 3:18 PM
These will certainly work well! You will want to consider higher quality media such as ROX 0.8 Carbon and GFO as your main source.
Answer by: Connor on Apr 27, 2016, 1:52 PM
Is this big enough for a 90 gallon aquarium?
Question by: TJ on Apr 19, 2016, 4:34 PM
Great question!
This will certainly work well for a 90 gallon system. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 19, 2016, 6:21 PM
Hi. I have a 200g mixed reef tank but I feed pretty heavily since I have some big tangs. My phosphates have been pretty high and can only put in 1.5 cups of the high capacity GFO so it tumbles properly. Can I put in this GFO in the carbon chamber as well and run double GFO with no carbon? Thanks.
Question by: Duy on Apr 18, 2016, 4:43 PM
Great question!
While it is possible the flow rates would be different from chamber to chamber and impact the performance. ideally separate pumps or a larger reactor will be needed.
Answer by: Connor on Apr 25, 2016, 6:54 PM
I have read all the info available for this piece of equipment, and i have read all the questions trying to understand why, but what exactly makes this reactor incapable of running high quality carbon in the first chamber and bio pellets in the second? it looks like the same type of construction on your specific bio pellet reactor, and i would like to better understand the differences!
Question by: Adam on Apr 16, 2016, 2:59 PM
Great question!
We do not recommend bio-pellet in the reactor for several reasons. In the second chamber the flow is greatly reduced (the whole unit if placed in the first chamber) The flow on a stand alone bio-pellet reactor is best adjusted independently from carbon and GFO to keep from adding too much flow or too little which either makes the pellets clog or release too much food into the tank. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 20, 2016, 1:55 PM
Hi im having a high phosphate and nitrate problem and its causing algea in my tank. I dont have a sump. Im new to this all. This is what is needed to helo lower them right? And i was buying the reactor dual with the pump combo. What else will i need for full setup. Want to mount it in the cabinet below aquarium. And not sure what stuff
Goes inside it. Do i need all gfo and if so what kind of gfo?
Question by: jenny Guttromson on Apr 16, 2016, 12:44 PM
Great question!
The Dual reactor will work great to run carbon for removing color, and odor from the water and GFO for removing phosphate. This is one of our favorite set ups to keep the system running!
Not much more will be needed beside the GFO and Carbon. For nitrate control the best will be regular water changes however there are several options for nitrate control available. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 20, 2016, 12:55 PM
Where would you place this in the sump? Would you want the return line running into the return chamber of the sump?
Question by: Jake on Apr 7, 2016, 2:37 AM
Great question!
You can place this anywhere, most will place the pump in an earlier section of the sump and the drain from the reactor into the return section. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 12, 2016, 5:08 PM
Would you be able to run a combo of GFO and carbon in the first chamber and biopellets in the 2nd? Or would you need to have 2 separate reactors for this? Thanks in advance.
Question by: Daniel on Apr 5, 2016, 3:20 PM
Great question!
You will not be able to run Bio pellets in the standard carbon or GFO reactors. They will be a bit of a head ache and clog very quickly. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 5, 2016, 5:54 PM
I just purchased the BRS GFO & Carbon Reactor but I am wondering if the flow is the same for the carbon as it is for the GFO how can I ensure that the flow will not push the GFO out into my sump?
Question by: Jeff on Mar 29, 2016, 11:05 AM
Great question!
The flow will typically be base off of the GFO requirement. You will place the sponge at top to prevent GFO from flowing through. Ideally the GFO will tumble smooth without being forced to the top. Feel free to let us know if you have any further questions!
Answer by: Connor on Mar 30, 2016, 11:44 AM
Hello there I would like to know that.can I use dual go and carbon reactor for my freshwater refugium sump and what type media it should use.thank for helping me.
Question by: phuoc nguyen on Mar 28, 2016, 6:00 PM
Great question!
You certainly can use the reactor and Carbon and GFO with a freshwater tank! Any of the Carbon and GFO supplements will work great at clarifying the water and removing phosphate. Feel free to let us know if you have any further questions!
Answer by: Connor on Mar 29, 2016, 2:51 PM
instead of running GFO and Carbon in a 2 stage BRS reactor, can i run carbon and phosguard?
Question by: Steve on Mar 27, 2016, 7:30 AM
Great question!
That will work just fine with many types of media. Feel free to let us know if you have any further questions!
Answer by: Connor on Mar 28, 2016, 5:52 PM
I have a 300 gallon tank with about 80 gallon sump refugium. I am need to decrease nitrates, and possibly phosphates(as the green film is starting to show up on the glass more often) . Would this dual reactor work with sulphur in one and argo(calcium) in the next? I am wanting to replicate a sulphur reactor. Or would you just recommend something else?
Question by: Shawn howard on Mar 26, 2016, 1:52 PM
Great question!
You can use the dual for GFO and carbon really well! However for sulfur you will want a dedicated nitrate reactor ( to keep the correct flow and gas release). I have included a link below! Feel free to let us know if you have any further questions!
Answer by: Connor on Mar 28, 2016, 12:04 PM
Could a eheim 1000 work for this?
Question by: James cross on Mar 19, 2016, 7:23 PM
Great question!
This could work however the Eheim pump connects to 5/8" tubing which will be very very difficult to convert to the 1/2" OD Polyethylene tubing on the reactor. we do not currently have any adapters or components to make the connection. Feel free to let us know if you have any further questions!
Answer by: Connor on Mar 21, 2016, 5:14 PM
Hi I have a red sea 350 reefer (93 G total) I want to run gfo and rox 0.8 carbon what reactor would you recommend is the better choice.
1. BRS GFO & Carbon Reactor – Dual
2. BRS GFO & Carbon Reactor - deluxe
Question by: MIGUEL VILLALOBOS on Mar 15, 2016, 11:18 PM
Great question!
When using the ROX 0.8 carbon you can select either and they will work great! You will use around 1/2 cup of media an the reactors can handle twice that amount. If you are planning on using GFO as well the dual will be nice as you can change the Carbon and GFO at different times. Feel free to let us know if you have any further questions!
Answer by: Connor on Mar 16, 2016, 11:08 AM
My question is if you have to put the reactor inside sump or could you get away putting it outside the sump since I don't have enough space for the reactor inside the sump.
Question by: Juan Bohorquez on Mar 10, 2016, 1:50 PM
Great question!
The reactor can be placed anywhere in the sump or out of the sump. It is sealed and will not leak if mounted externally. Feel free to let us know if you have any further questions!
Answer by: Connor on Mar 10, 2016, 4:35 PM
I have a 200 gallon tank and was wondering if this dual reactor will be enough capacity to hold both GFO and Carbon to make it beneficial towards filtering my tank.
Question by: Louis Tong on Feb 25, 2016, 9:49 PM
Great question!
Unfortunately the dual reactor would be a little small however could work with ROX 0.8 carbon and High Capacity GFO. On a larger tank such as 200 we recommend more room in the reactor with the Jumbo BRS reactor or even the Phosban 550. Feel free to let us know if you have any further questions!
Answer by: Connor on Feb 26, 2016, 9:53 AM
I have just a single carbon reactor now and I want to switch to the dual reactor is it ok to run the gfo all the time like I do with my carbon? Still new to all this so I just keep researching.
Question by: Jason on Feb 8, 2016, 11:08 AM
Great question!
GFO will be run very similarly to carbon however ideally it will be tumbling. You will change the carbon once every 4 week and GFO once every 6-8 weeks. Feel free to let us know if you have any further questions!
Answer by: Connor on Feb 10, 2016, 5:36 PM
Will the MJ-1200 be able to push water down 30inches, through the reactors, then up 30inches? Just want to make sure the pump will be strong enough.
Question by: Lola Knudsen on Feb 7, 2016, 5:11 AM
Great question!
The MJ1200 would be a little limited to push back up 30". we recommend an alternative such as a sicce 1.5 which can handle a greater head height. Feel free to let us know if you have any further questions!
Answer by: Connor on Feb 10, 2016, 6:50 PM
Does the Gfo and carbo duel reactor come with the tubing to hook it up? And can you run carbon and Gfo at same time ?
Question by: Jeff on Jan 29, 2016, 8:25 AM
Great question!
In the Dual reactor the plumbing and all components will be included. With the Dual it is recommended to run the GFO in the first chamber and carbon in the second chamber.
Answer by: Connor on Feb 9, 2016, 2:24 PM
Hey I'm looking into buying this for my 120gallon mixed reef but u need to know the dimensions of it, my sump is pretty large, but I don't have a lot of space to mount inside the cabinet so I'm hoping to just place it in the sump. Thanks
Question by: Ben on Jan 23, 2016, 8:29 PM
Great question!
With tubing installed and bracket the system will take 11" wide, 15" tall and 5" front to back. Feel free to let us know if you have any further questions!
Answer by: Connor on Feb 3, 2016, 11:08 AM
What size tanks are these rated for?
Question by: Lance Barnes on Jan 21, 2016, 2:48 PM
Great question!
These will work on a wide variety of sizes depending on the amount and type of media used. Up to 200+ gallons when the High Capacity GFO and ROX 0.8 carbon are used. Feel free to let us know if you have any further questions!
Answer by: Connor on Jan 27, 2016, 7:36 PM
Is it possible to make this reactor have separate flows to each chamber so to tire each media different. I hope that makes since. Also is it possible to use a a different media other then GFO for the removal of phosphates.
Question by: James on Jan 20, 2016, 11:54 PM
Great question,
You can attempt to move the position of the canisters to adjust so they are not next to each other if needed. Other medias can easily be used in the reactor without issue. Feel free to let us know if you have any further questions!
Answer by: Connor on Jan 27, 2016, 7:59 PM
I been using it for a week and I don't see my water look clean The flow it's got to be very low so the gfo don't go into my tank oh good may fix the problem
Question by: Freddy on Jan 13, 2016, 10:03 PM
Hey there!
Great question. When dealing with water clarity it can vary greatly depending on the elements in your tank. If the water contains green water (Algae) It will be tough for the Carbon to remove any of the colors from the water and a large water change will need to be performed. With the GFO often you can attempt to add an additional sponge in the top to help catch any GFO particles from flowing into the tank. If the issues continue feel free to give us a call and we will be more than willing to help!
Answer by: Connor on Jan 14, 2016, 11:42 AM
Hello, i need replacement sponges and screens for the Bulk Reef Supply dual reactor. Do you sell these? What item number is it?

Question by: TRavis on Dec 22, 2015, 8:04 AM
Great question!
We do have replacement pads available (Listed in the link below). Unfortunately we do not have replacement screens available. Feel free to let us know if you have any further questions!
SKU# 204186
Answer by: Connor on Jan 7, 2016, 11:07 AM
I ordered this and the connectors leak where the tubing goes into the reactor. Am I doing something wrong ?
Question by: chadb202 on Dec 21, 2015, 8:47 AM
Hey there,
I am sorry to hear about the reactor leaking, You most likely are not doing anything wrong however the connections sometimes need to be removed and reinserted to make a proper seal with the quick connect. If the issue persists feel free to give us a call and we will be more than willing to help!
Answer by: Connor on Jan 6, 2016, 5:56 PM
I need to buy replacement o-rings for the canisters. Do you sell them?
Thanks in advance for any info.
Question by: Sandra on Apr 21, 2015, 2:36 PM
Great Question Sandra! We certainly do, they can be found here: https://www.bulkreefsupply.com/o-ring-for-10-reverse-osmosis-canisters.html
Answer by: Bulk Reef Supply on Apr 21, 2015, 2:36 PM
Could you use a carbon block instead of the granular carbon in the carbon part?
Question by: Brian on Aug 25, 2014, 8:36 AM
Hi Brian,

Due to the great deal of pressure needed to force water through the carbon block this would not be possible with an ordinary water pump. Also, the small pore size would quickly clog as detritus from your system was pumped through the block. I would stick with one of our granular carbons.

I hope this helps!
Have a great day :)
Answer by: Bulk Reef Supply on Aug 25, 2014, 8:36 AM
i have a 264 gph submersible pump, would that be enough to work for this?
Question by: Devon on Jul 21, 2014, 6:07 AM
Hi Devon,
As long as it has a reasonable amount of power it should be just fine.
Answer by: Bulk Reef Supply on Jul 21, 2014, 6:07 AM
I was interested in getting a reactor for my 90G reef tank. Which reactor would you recommend? The single or the dual?
Question by: Dylan on Jul 11, 2014, 3:09 AM
Hi Dylan,
Assuming you want to run GFO and carbon you would want the dual reactor for a tank that size. If you just plan to run a single media, then the single would be fine.
Answer by: Bulk Reef Supply on Jul 11, 2014, 3:09 AM
My dual reactor slowly fills up with air over a day. I have to adjust to zero flow, let the water level rise, then slowly turn on the flow to push the remaining air out. Any recommendations?
Question by: Rik on Jun 26, 2014, 4:35 AM
Hi Rik,
The reactor has a small air bleed hole that can be found on the underside of the bracket/lid assembly when the canisters are removed. Most likely it just has a bit of detritus stuck in it. You should see one large exit hole in the middle, and towards the exit side of the reactor a very small hole. Cleaning that out will help the air to bleed out of the system as it runs. That said though, couple of other points worth mentioning.

First of all, if air is finding its way into the reactor you likely need to submerge your pump farther. Sounds like its sucking in air.

Second, and likely most importantly, if their is some air in the reactor it won't effect the performance in anyway. The water is traveling through the system as it should so removing the air is purely an aesthetic thing. It is just for looks, so you could just as well leave it as well :)
Answer by: Bulk Reef Supply on Jun 26, 2014, 4:35 AM
Bought the Dual reactor a couple months ago. The GFO is a little too much for the tank right now, (I want some chaeto to help with the Pods in the tank) so I will be pulling the GFO out, but still want to run carbon. Can I add double carbon in the GFO side just to extend the time between carbon changes, or is that a bad idea?
Question by: John on Jun 8, 2014, 9:28 AM
Hi John,
Its not problem to run the GFO chamber empty but it wouldn't be useful to add twice as much carbon. It would still need to be changed in the same amount of time so it would really just be a waste :-)
Answer by: Bulk Reef Supply on Jun 8, 2014, 9:28 AM
So my question is about routing the plumbing.... Is there a right or wrong way? I have a sump and I have it it coming out of the return side of the sump and have it going right back in the same chamber.... Is this bad or could there be another way? Also I have a maxi jet 1200 powering it.. But it's wide open and doesn't seem to be tumbling hype gfo very much... Any help would be great... Thank you.
Question by: David on May 9, 2014, 8:38 AM
Hi David,
There isn't really a right way or wrong way here. Your going to cycle the tank over so many times over the coarse of a day, week, etc that I would just plumb it in the most convenient way possible. Generally this is going back to the same chamber you pumped it from as then you don't have to worry about any odd siphoning issues or anything like that. Your looking for the least amount of flow that keeps the GFO from turning into a big brick, so long as it hasn't solidified into a block your good to go :-)
Answer by: Bulk Reef Supply on May 9, 2014, 8:38 AM
Hello. Does the water through the GFO container and the one flowing through the Carbon container have the same flow rate?
Question by: Peng on May 8, 2014, 7:46 AM
Hi Peng,
Yes they are connected in series and will both have the same flow rate.
Answer by: Bulk Reef Supply on May 8, 2014, 7:46 AM
I'm going to need longer tubing due to it being placed underneath my tank. What size tubing do I need? What else will I need such as elbows to route the cords better?
Question by: Vincent on Apr 29, 2014, 6:11 PM
Hi Vincent,
The tubing is 1/2" RO tubing which can be found at the link below. Fitting wise, it depends on your setup but elbows are largely it. Perhaps a 1/2" union if you need to connect two pieces together in a straight location (but its usually cheaper just to buy a longer length of tubing then to buy the fitting to connect two together).
Answer by: Bulk Reef Supply on Apr 29, 2014, 6:11 PM
What size carbon can use on dual reactor. U have multible. What gfo
Question by: mike on Apr 28, 2014, 8:43 AM
Hey Mike,
Most folks use the lignite carbon in the reactor as its easy to work with in that setup. As far as GFO goes, most people use the standard GFO. The only reason to use the high capacity GFO would be if you need more then fits in the 2 cup capacity of the reactor, because the HC is twice as dense it goes twice as far for the same volume.
Answer by: Bulk Reef Supply on Apr 28, 2014, 8:43 AM
what is this used for
Question by: angelo on Apr 11, 2014, 6:09 PM
It is generally used for GFO and carbon, though folks use it for other types of media.
Answer by: Bulk Reef Supply on Apr 11, 2014, 6:09 PM
I saw on one of the forums that, the cobalt MJ-1200 that you suggest for these reactors is very loud. If that is the case, can you suggest what size pump(GPH) would be a suitable replacement? My system is super quiet and I would like to keep it that way. Thanks.
Question by: David on Apr 5, 2014, 10:57 PM
Hey David,
Those folks are confusing the pump with the Marineland Maxi Jet 1200. The marineland pump used to be the go to standard however they took the design to China and ever since those pumps make a very loud rattling noise when used in a reactor or other situation with back pressure. The cobalt aquatics MJ1200 is the old original italian made pump and is the same tried and true quiet and reliable pump we were all used to and the one recommended for the reactors.
Answer by: Bulk Reef Supply on Apr 5, 2014, 10:57 PM
I have a 150 g tank with a 25g sump below the tank, is this a large enough unit and how often would I need to change media, no phosphate problem now but looking to add fish and corals, I have 6 fish now 3" long. Thanks
Question by: jammerdave on Mar 30, 2014, 6:00 PM
Hey there,
The reactor has a fixed capacity (two cups of media that needs to tumble, like gfo, and 3 cups for media that doesn't, like carbon) so how big it is really depends on the media you plan to run and how much you need. What medias were you planning to put in the reactor?
Answer by: Bulk Reef Supply on Mar 30, 2014, 6:00 PM
Interested in the dual phosphate/carbon reactor. Have 100 gal tank with sump, which pump do you recommend? Thanks
Question by: Greg on Mar 30, 2014, 4:21 PM
Hi Greg,
We recommend the cobalt mj1200 for use with the dual reactor. It plugs right in, works well, and tend to last a long time.
Answer by: Bulk Reef Supply on Mar 30, 2014, 4:21 PM
I have a couple of questions. First, the height listed. Is that the height of the canisters only or does that number include the bracket? Also, do the instructions tell you how much media is needed for your size tank? I have a 40 breeder. Thanks.
Question by: David on Mar 27, 2014, 7:19 PM
Hi David,
The height is total. The amount of media you use isn't dependent on the reactor (though it has a max capaicty). The amount of media you use is dictated by the size of your aquarium and what actual media you are using. Instructions would be on the container of your media, but you can use the BRS calculator on the website to calculate out the amount for any of our BRS brand medias ahead of time. You can find it at the top of the page or at the link below:
Answer by: Bulk Reef Supply on Mar 27, 2014, 7:19 PM
I will be upgrading my tiny 14 gallon tank to a nice 50 gallon soon. Is this product recommended for a brand new tank?
Question by: Hank on Mar 23, 2014, 8:13 PM
Hi Hank,
I would suggest running GFO and carbon on any tank, even better if its a new tank as you can help keep it in good shape rather then trying to to recover after things get out of hand.
Answer by: Bulk Reef Supply on Mar 23, 2014, 8:13 PM
Is there any way that I can hang this on the back of my JBJ NANO 28 gallon?
Question by: Bryant on Mar 20, 2014, 6:16 PM
Hi Bryant,
Unfortunately the dual reactor doesn't have a hang on back configuration. It could either be mounted to the wall,stand, etc behind the tank or even just set on a desk. If you need something that has the ability to hang on the rim of a tank then I would look at the Two Little Fishies Phosban Reactor. It has a hang on back mount. The 150 will have plenty of capacity for a tank your size.
Answer by: Bulk Reef Supply on Mar 20, 2014, 6:16 PM
could i run the duel gfo and carbon reactor with biopellets in one chamber and carbon/gfo mixture in the second, or would the pressure the biopellets need to tumble be too much.
Question by: Joe on Feb 24, 2014, 11:55 AM
Hi Joe,
The dual reactor is not compatible with biopellets. As much as we would wish otherwise, biopellets do not play nice with other medias and need to be run in an entirely separate reactor :-)
Answer by: Bulk Reef Supply on Feb 24, 2014, 11:55 AM
Do you sell the sponge disks that hold the media in place separately?
Question by: Michael on Feb 3, 2014, 7:33 AM
Hey Michael,
I think these are what your looking for:
Answer by: Bulk Reef Supply on Feb 3, 2014, 7:33 AM
I am looking to buy the Dual GFO/Carbon reactor. How often should I replace the GFO in the reactor? and does it release phosphates back into the water once it has reached it usefulness?
Question by: Travis on Jan 31, 2014, 5:47 AM
Hi Travis,
It should be changed once its capacity has been reached. The best way to know this is to monitor your phosphates with an easy to read phosphate meter like a Hanna phosphate checker. Usually this is about 4-6 weeks but entirely depends on how much phosphates you have, which is almost entirely related to how much you feed. GFO will not release phosphates back into the aquarium however once its reached its capacity it will no longer be removing new phosphate so the levels will begin to rise.
Answer by: Bulk Reef Supply on Jan 31, 2014, 5:47 AM
Hi, I have a 120 gal tank, with a 30 gal sump. would it be wise to run this unit with both mixtures of gfo/carbon in both canisters vs. gfo in one and carbon in the other?
Question by: Amber on Jan 28, 2014, 6:11 PM
Hey Amber,
With the dual reactor its best to run GFO in one and carbon in the other. GFO generally is changed less frequently then carbon when its feasible (usually monthly) whereas carbon is changed every 2 weeks. Keeping them separate allows you to do this :-)
Answer by: Bulk Reef Supply on Jan 28, 2014, 6:11 PM
Can I run bio pellets in the first chamber and a mix of carbon/GFO in the second?
Question by: Travis on Dec 21, 2013, 1:34 PM
Hi Travis,
The dual reactor is not compatible with biopellets. For biopellets you would want a separate biopellet reactor. The BRS biopellet reactor works great for tanks under 50g, otherwise something like the octopus BR series reactors are usually the next size up for folks.
Answer by: Bulk Reef Supply on Dec 21, 2013, 1:34 PM
Would running one of these types of reactors be overkill on a Biocube29? Im wanting to run both GFO and Carbon and dont think the innovative marine will do so. Would also like something that I can use when i upgrade to a 90 this spring.
Question by: Chris on Dec 20, 2013, 4:05 PM
Hey Chris,
Thats not an issue. The chambers may look a little empty with the amount of media you use for a tank that size but it won't hurt anything and youll have it for your big tank this spring.
Answer by: Bulk Reef Supply on Dec 20, 2013, 4:05 PM
What's the best way to connect a pump to the reactor? I have an extra Maxi jet 1200 I thought I'd use, but the outlet is exactly the same size as the tubing for the reactor and the ½" reactor tubing won't stretch to fit over it.
Question by: Patrick on Dec 3, 2013, 5:18 AM
Hey Patrick,
All it takes is a 1/2" push connect union which the reactors themselves come with. Otherwise I have them linked below as well.
Answer by: Bulk Reef Supply on Dec 3, 2013, 5:18 AM
Considering a brs carbon and gfo dual reactor. What is the gfo component and what does it do. Thanks brs team you guys rock
Question by: John on Nov 27, 2013, 3:00 AM
Hey John,
GFO stands for Granular Ferric Oxide and it is a phosphate remover. Its actually one of the few effective ways of removing phosphate from the tank which is pretty important as its not only an algae food, but it also inhibits the growth of stony corals as well. Here is a short video we did on GFO
Answer by: Bulk Reef Supply on Nov 27, 2013, 3:00 AM
We have several BRS media reactors that we use interchangably with bio pellets, activated carbon, and gfo. I was looking on the site today to purchase two more, and see that the gfo and carbon reactor is not for use with bio pellet media. My question is what is the difference between the gfo/carbon reactor and the bio pellet reactor?
Question by: Victoria Crow on Nov 19, 2013, 6:20 AM
Hi Victoria,
The GFO reactor cartridges have sponges (which can be removed) vs the biopellet reactor doesn't have sponges but does include an additional larger fitting for using with bigger pumps as typically biopellets require higher power pumps.
Answer by: Bulk Reef Supply on Nov 19, 2013, 6:20 AM
Looking to buy a couple of the ball valves included with this reactor. I don't see them listed separately on the site.
Question by: Lance on Oct 2, 2013, 4:42 PM
Hi Lance,
They are 1/2" inline ball valves. They can be found right here:
Answer by: Bulk Reef Supply on Oct 2, 2013, 4:42 PM
which replacement pads should I purchase for this reactor ?
Question by: Guy on Sep 26, 2013, 2:32 PM
Hey Guy,
You would want to use these replacement filter pads:
Answer by: Bulk Reef Supply on Sep 26, 2013, 2:32 PM
I have 185 gal reef tank (SPS, LPS and soft). Would this dual reactor work? I do 20% water changes every 2 weeks. Only parameter that is off is phosphate at .22.

I have 15 medium size fish.
Question by: marco on Sep 10, 2013, 1:59 PM
Hey Marco,
The capacity of the reactor chambers is 2 cups for GFO. For a tank that size it would work if you were using the high capacity GFO as you would only need 1.5 cups. If you were using the regular GFO you would need 3 cups and then it would not work (then you would want to look at something like the Jumbo reactor or a different manufacturer reactor like the Vertex).
Answer by: Bulk Reef Supply on Sep 10, 2013, 1:59 PM