Prevent algae breakouts by removing the nitrates and phosphates in your reef tank. NO3:PO4-X Nitrate & Phosphate Reducer from Red Sea is a complex of carbons each with a different strain of microorganisms in a reef ready solution.
Three Sizes Available
- 500mL
- 1000mL
- 5000mL
Red Sea's NO3:PO4-x is a part of their Algae Management Program that combines highly effective, controlled biological reduction of nitrates and phosphates for all reef and marine aquariums. Between testing and dosing the proper additives, nutrients in the aquarium can be easily managed with no undesirable effects. NO3:PO4-x helps promote naturally occurring nutrient-reducing bacteria that already exist in your aquarium.
- Reduces and maintains NO3 and PO4
- Cost Effective
- 100% Reef Safe (do not overdose)
- Nitrate and Phosphate reduction in a controlled setting
Dosage Guide:
We highly recommend starting with half the recommended dose for your aquarium type and using high-quality Nitrate and Phosphate test kits during implementation. Keeping a steady dosing regime is key, and daily dosing is highly encouraged. We prefer to use a dosing pump system for daily dosing, which keeps the doses very precise and reliable.
| Aquarium Type |
Recommended NO3 Level |
Recommended PO4 Level |
Average Daily Dose of NO3-PO4-X |
| Mixed Reef | 1-2ppm | 0.08 - 0.12ppm | 2mL per 25 gallons |
| SPS Frags | 1-2ppm | 0.08 - 0.12ppm | 2mL per 25 gallons |
| SPS Dominant | 0.25 - 0.5ppm | 0.01 - 0.02ppm | 1-2mL per 25 gallons |
| Ultra Low Nutrient SPS | 0ppm | 0ppm | 1-2mL per 25 gallons |
| Marine Fish | <10ppm | <1ppm | 3mL per 25 gallons |
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Amazing for Nutrient Control By Dmize on 1/1/2019
Dmize would recommend this product to a friendThis product is amazing for nutrient control. Probably hands down the best product I use for my 150g mixed reef tank. In conjunction with my skimmer and bio-pellets my nutrient levels Phosphate and nitrate are rock solid. I used this to counter an out of control algae bloom and it did wonders with the 3 day black out method. -
Great Nutrient Control By Jeff on 11/11/2018
Jeff would recommend this product to a friendAwesome product once you get to know it. I made the mistake by not letting my aquarium cycle and started using nopox to get my numbers down. using the recommended dose i got bad slime and a major dino outbreak. I stopped nopox raised my nitrates back to 80 with sodium nitrate then when dinos and slime stopped and my tank was cycled i only dosed 6ml for my 120 for 1 month and now my phosphate is steady at .06 and nitrate is at 1 and finally I cut back my dose to 2ml per day with heavy tank feedings, my tank has never looked better. word of caution is to use way under the recommended dose and start slow. also a great idea to dose red sea energy a and b to keep those coral colors. now that i know how to use this i love it very simple. -
Works wonders By Joe on 7/2/2018
Joe would recommend this product to a friendIt kills/hinders the growth of algae as advertised. Dosing 5ml on my 210 since 10ml seemed to stress out a lot of my corals. Within two weeks most if not all of the algae in my tank was gone. -
Does what it says, and no adverse side effects By Matthew on 4/16/2018
Matthew would recommend this product to a friendI had a massive algae outbreak in a very new tank with only a few things in it. I moved as much livestock as I could to my already very established additional tank, and begin dosing this. Within 2 weeks, my NO3 had dropped, and the algae has cleared up significantly. -
best silent/ulm method of no3+po4 reduction By overclockwise on 3/28/2018
overclockwise would recommend this product to a friendI have my tank in my bedroom so silence is a must. I've looked into chaeto reactors, biopellets and refugiums - they all had one thing in common, noise from something running 24/7, increased maintenance or spending $$$ on a light that will be on while I'm sleeping. I already dose 2 part through a doser so I got this instead. It doses 4ml at 1PM everyday and that's it. No pump noise, no reactors to clean, no cheato to harvest, no large refugium taking space, and no extra light in the room. I will keep buying until Red Sea stops making this. -
Works when others won't By Brian on 2/9/2018
Brian would recommend this product to a friendI had high phosphates from an unknown source and I tried everything to get them down but nothing worked. I tried Rowaphos, ALR 99, GFO, Phosguard, etc but this is the only product that helped me. I add about 2ml once a week now to my Reefer 250 and I never have phosphates or nitrates. -
Stuff just works great on my SPS reef tanks. By buntaro on 12/12/2017
buntaro would recommend this product to a friendI used to use Purigen, carbon, bio-pellet reactor, Chemi-Pure Blue and just about everything else, with frequent water changes, and ALWAYS was fighting NO3/PO4 issues. Got this stuff (which sells like nail polish remover BTW) and I've cut out all other additives and have absolute great water parameters. I wish I would have started using it earlier, had it, opened the bottle and thought "I'm not putting acetone in my tank!", but finally did and it works wonders. Love the stuff and sooo much less hassle and cost than a bunch of other expensive measures that just don't work very well. -
May take a little bit to get dialed in By John on 11/28/2017
John would recommend this product to a friendThis is a great product and is super easy to dose daily on my 60 gal system. It did take a bit to get my system balance, as I had a phosphate imbalance in my system. I added GFO, even though it says not to, to bring the nitrate/phosphate balance inline. Now that the system is stable, I don't even bother testing for nitrates/phosphates anymore. -
no3 nopox By lisa on 10/24/2017
lisa would recommend this product to a friendthis is the best carbon product for your money -
Works extremely well By richard on 10/16/2017
richard would recommend this product to a friendFollow directions don't overdose and make sure you have a high quality skimmer and this product works extremely well. -
Awesome Product By Bouncingsoul on 10/11/2017
Bouncingsoul would recommend this product to a friendI love this product and my gut feeling is that this works better than Vodka or Vinegar alone. I'm not testing nitrate and phosphate with this, I'm going by visual results and adjusting as needed. The product worked very quickly for me with algae control. I went from having cyano on the sand bed and having to clean the tank glass every day to having crystal clear water, clear sand bed, and haven't touched the glass in a week. This was after about 1 week following the recommended dosage for an SPS tank.
In hindsight, I would have started with 1/2 dosage and ramped up to the full after a couple weeks because my SPS were not happy with the change in nutrients. The LPS like Chalices, appear unaffected. I feed my fish 3-4 times per day and will start dosing Reef Energy A+B to help the SPS come back to color. -
as advertised By iMygdala on 9/11/2017
iMygdala would recommend this product to a friendThe instructions are clear even if the dosing cup is rudimentary. I was warned to watch for over-suppresion of nitrates and phosphates. Red Sea requires weekly testing and dosing adjustments based on results and this had been provided a very soft, gradual transition into better numbers. Instructions state that there is no need for a GFO reactor but I have continued to run one and phosphates have been stable between 0.08 and 0.04. Skimmer is a must, and this is stated in the instruction; the sludge coming out of the skimmer is much darker and disgusting than before dosing. Back to measuring cup.... For the measured nitrates, the instructions stated that the tank needed three cc's per 25 gallons. The tank is a 43 gallon Red Sea Reefer which works out 5.16 mL's, but the measuring cup just ain't close to that good. Which makes me think that the dosing is probably good if its within 20%
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Red Sea Algae Control Multi Test Kit (NO3/PO4)
$59.99 -
Red Sea Reef Energy A&B Combo Pack
$15.99
Special Price: $13.59
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Red Sea Trace Colors Pro Multi Test Kit (I2,K,Fe)
$69.99 -
Bulk Reef Supply 2 Part Doser - 1.1 mL per minute
$79.99
Special Price: $69.99
I really appreciate BRS, all the videos are so helpful. You put in so much work in the BRS 52 weeks and Investigates My tank in a 33 gal cube with all HOB equipment. I have a good skimmer and I only have 7 small fish. I was feeding 2 sun corals and this is when my NO3 went up to as high as 100. and the p04 to .2 I started using Rowaphos and vodka dosing. My p04 in now .03. N03 is still 25-50. Will NOPOX do a faster job of lowering my nitrates? I've been using vodka since 8/11. My currant dose is 3,7ml/day. Thank you
Question posted on Oct 8, 2017 9:44:00 PM
Hey there,
Thanks for getting in touch with us in regards to lowering your nutrients with NOPOX. I am not sure if this would lower it quicker, but I personally would feel it to be more of a stable additive then vodka as its made specifically for aquarium use. I have although seen a few tanks maintained with vodka with amazing results. Please let me know if there is anything else that we can assist with. Thanks!
Thanks for getting in touch with us in regards to lowering your nutrients with NOPOX. I am not sure if this would lower it quicker, but I personally would feel it to be more of a stable additive then vodka as its made specifically for aquarium use. I have although seen a few tanks maintained with vodka with amazing results. Please let me know if there is anything else that we can assist with. Thanks!
Answer by: Tyler Schafer (Admin) on Oct 14, 2017 3:19:00 PM
If my tank is running very low to 0 nitrate and phosphates is this still recomended if I want to build benificial bacteria like the product claims?
Question posted on Apr 24, 2016 7:13:00 PM
Great question!
You will not need to use this product if your levels are undetectable. While this provides food for bacteria it will most likely result in over dosing and issues such as excess bacteria such as Cyano.
You will not need to use this product if your levels are undetectable. While this provides food for bacteria it will most likely result in over dosing and issues such as excess bacteria such as Cyano.
Answer by: Connor (Admin) on Apr 27, 2016 2:19:00 PM
While using NOPOX can i still run my U/V sterilizer?
Question posted on Jan 13, 2016 4:20:00 AM
Great question!
Typically with Bacteria growth systems such as NoPox, Zeovit, and Bio-pellets it is not recommended to run UV sterilizers as they can keep the bacteria from repopulating in the tank as needed! Feel free to let us know if you have any further questions!
Typically with Bacteria growth systems such as NoPox, Zeovit, and Bio-pellets it is not recommended to run UV sterilizers as they can keep the bacteria from repopulating in the tank as needed! Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jan 13, 2016 1:48:00 PM
If all is reading well is this safe to use daily! Just to keep all under control
Question posted on Apr 13, 2016 10:52:00 AM
Great question!
This is recommended for daily use for keeping up with nitrate levels. Feel free to let us know if you have any further questions!
This is recommended for daily use for keeping up with nitrate levels. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Apr 13, 2016 3:17:00 PM
Can I use Red Seas No3PO4x added in with my ATO/Kalk? I make up a weeks worth at a time. I'm away from home frequetly so the daily measure and addition of the liquid is not possible.
Question posted on Apr 15, 2016 5:55:00 PM
Great question!
It may be possible however you would need to perform some math by seeing how much Top Off water you add each day. We do not recommend this as the nopox will settle out in the RO water and not be mixed evenly. Feel free to let us know if you have any further questions!
It may be possible however you would need to perform some math by seeing how much Top Off water you add each day. We do not recommend this as the nopox will settle out in the RO water and not be mixed evenly. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Apr 20, 2016 12:22:00 PM
I recently moved and setup my reef tank. The tank has begun showing diatoms. Is this product recommend during the tank cycling process? Will it help rid my tank of diatoms?
Question posted on May 3, 2016 10:35:00 AM
Great question!
This product will decrease nitrate levels in the tank by feeding the bacteria and growing the population that additionally consume nitrates. Diatoms will typically not be impacted and usually will fade after a few days without light or siphoning out.
This product will decrease nitrate levels in the tank by feeding the bacteria and growing the population that additionally consume nitrates. Diatoms will typically not be impacted and usually will fade after a few days without light or siphoning out.
Answer by: Connor (Admin) on May 3, 2016 4:59:00 PM
I travel a lot with my job so I can't always dose daily. Can NOPOX be added with a dosing pump?
Question posted on Jun 1, 2017 9:28:00 PM
There should be no issues with setting this up with an automated doser. We know of quite a few customers doing just this.
Happy reefing!
Happy reefing!
Answer by: Zack (Admin) on Jun 8, 2017 10:58:00 AM
