great product t By David on 10/13/2014
David would recommend this product to a friend
I highly recommend this product. It keeps my phosphate levels ultra low.
superb media works better than promised By Bruce on 9/8/2014
Bruce would recommend this product to a friend
I'm running a 360 gallon reef/fish tank, have a couple of large 7-8" plus tangs, and an 8" queen angel, plus some smaller fish
been having elevated phosphate levels, tried other reactors with no real effect,
bought this BRS Jumbo reactor, filled it with the recommended 6 cups of GFO hi capacity and VIOLLA within a WEEK, my phosphate levels dropped from a .90 average, down to a .20 average.... a nice decline about .10 each day.
This media REALLY does the trick
HIGHLY recommended by
bruce in Chicago
Wouldn't be without it. By Gerry on 8/21/2014
Gerry would recommend this product to a friend
I used to suffer from high phosphates and had unsightly hair algae growing. I tried water changes and scrubbing rocks. I finally tried GFO which worked well, but was messy to work with. I decided to try the high capacity and I will never use anything else again. This stuff is awesome and is very clean to work with. Hats off to BRS for this product.
Does its job, works good both in my wallet and in my tank By DOMINICK on 8/21/2014
DOMINICK would recommend this product to a friend
Does its job, works good both in my wallet and in my tank
Keeps PO4 in check By danny on 7/31/2014
danny would recommend this product to a friend
Very low dust unlike other types of GFO & you use less of it to achieve the same results which reduces stress on your pump. My PO4 levels are around 0.03 ppm using the HANNA CHECKER.
Best GFO on the market By Sean on 5/26/2014
Sean would recommend this product to a friend
This is the best GFO I have used before. It lowers my Phosphates better than any other product on the market. The corals have noticeably become more colorful as well. Good product!
Regular vs Hi-Cap GFO By Drew on 5/11/2014
Drew would recommend this product to a friend
I goofed and ordered Regular GFO instead of the Hi-Cap that I normally order.
YES.... there is a difference.... My Phosphate levels have reacted accordingly.
I have double the PO4 than I normally have when using the Hi-Cap.
High Capacity GFO. By Śruba on 5/10/2014
Śruba would recommend this product to a friend
I would buy it again because this media works very well for me. Try it yourself and see what I mean.
Thank you BRS.
Look no further! By MUSBFRANK on 4/30/2014
MUSBFRANK would recommend this product to a friend
Let's just say I had a serious phosphate problem and tried several other medias. I put the recommended amount of GFO in a nylon sock and pumped water through it with a powerhead. It's a 750gal reef tank and the phospates had soared up to 2.0, after putting the GFO I tested the water roughly 3 days later and they were barely detectable. Can't say enough about this stuff and I will never use anything else!
Works Great!!! By Andy on 4/4/2014
Andy would recommend this product to a friend
2nd time ordering & works great with fantastic results..ie perfect water parameters.
Very good at removing phosphate By KEVIN on 4/2/2014
KEVIN would recommend this product to a friend
Works great. It's a little pricey but it does what I need
great stuff By Chicago on 3/25/2014
Chicago would recommend this product to a friend
nice and clean. I use in my reactor. With other brands took like 15 gallons until clean and clear water was following. With this high capacity only takes like 5 gallons to run clean. Love it and would recommend for all phosphate issues. Of course you cant beat the BRS service and price.
Best way to keep my phosphates low By Michael on 3/18/2014
Michael would recommend this product to a friend
I run this GFO in my 90 gallon mixed reef tank. Have it running in a 2 Little Fishes reactor and it works great. Replace every 4-6 months and my phosphates stay at zero. Highly recommend.
great product By angelo on 3/17/2014
angelo would recommend this product to a friend
been using this product since i started my tank. never had an issue with phosphates. lasts a long time and only have to use a little bit.
Fantastic! By Jawgrants on 3/14/2014
Jawgrants would recommend this product to a friend
Running this with the ROX carbon through the BRS dual canister (one in each chamber) and I am shocked by the phosphate removal in less than 3 days.
Before running, our phosphate was 1.3 ppm in the Hannah meter. I am running less than recommended by the BRS calculator only because I didn't want to completely shock the system. However, after less than 3 days it's down to 0.03 ppm. Wow! I'm going to continue testing in another few days to see if it drops further. If not, I will bump up to the recommended level. Thanks, BRS for another couple of great products! Worth the price!
Very Satisfied By Charlotte Reefer on 3/10/2014
Charlotte Reefer would recommend this product to a friend
I'm running the GFO high capacity with an IM Minimax reactor on my nuvo 24 tank. I was getting some nasty hair algae after trying to fatten up some new fish. PO4 was around 0.08 and that was with Chemipure Elite in the media basket. After a few days by phosphates went down to 0.03 and last night I registered 0.00 using the Hanna low range checker. CUC is destroying the algae now and it take about 3 days before I get a noticeable green/brown film on the glass.
This seems to be a great value. Given the size of my tank and the rate the GFO is being used up, this is pretty affordable way to control phosphates. I highly recommend.
Great product By Ourisland42 on 2/20/2014
Ourisland42 would recommend this product to a friend
I would definitely recommend. It is working !! My phosphates are going down, finally....
Excellent service with BRS, as always!
Phosphate Removal By Matt on 2/17/2014
Matt would recommend this product to a friend
Works great at controlling phosphates. Also, works well in a media reactor as I use it with the TLF media reactor with a maxi-jet pump.
Must have for any reef tank By James on 1/24/2014
James would recommend this product to a friend
I've been using the brs standard gfo and this gfo makes a huge difference. I couldn't keep my phosphate under .06 with the standard stuff. Now I've got it down to .01 in only the first week of using this product! I'm very happy even though it's a little more money.
Must buy! By devon on 1/9/2014
devon would recommend this product to a friend
i really love this media, i have seen drastic changes while using this. i tends to last long than the cheaper stuff. less dust is a big plus. i must say though what until it is on sales thats when i order it.
phosphate killer By Theodore on 1/5/2014
Theodore would recommend this product to a friend
This gfo took my phosphates from .5 to undetectable . Amazing stuff now my corals are way more colorful and polyps are fully extended. Couldn't be happier with this product.
Excellent fast phosphate killer! By George on 12/28/2013
George would recommend this product to a friend
BRS' standard gfo is amazing... but this... this takes it to another level. My square 60 gallon salt tank was fill to the bring of slimy green algae. My brother then took this stuff... put it into my two reactors i recently bought and within a week the green disappeared. After 2 months, the water has remained crystal clear. The best time to get this is during their sale which is what we did during their black friday sale. Can't go wrong. Double the power of the standard stuff no joke!
GFO that makes a differemce By terminator on 12/2/2013
terminator would recommend this product to a friend
I have used many different types of phosphate removal products and for cost, quanity and effectiveness you can't beat the high capacity version of this GFO. There are a few other products that are as effective but cost more and you get less of it. Why spend more?
This is the only practical GFO to use, hands down
Tank is looking better after only days By Geo on 11/20/2013
Geo would recommend this product to a friend
Our LFS ran out of RowaPhos and it was going 3 weeks, I tried other gfos but they didn't do it, too much dust or they would just clump and not tumble, gave the high capacity a go and my tank is already looking better. I believe I will be sticking w this from here out.
works great By jim on 11/18/2013
jim would recommend this product to a friend
ez using, little dust.starts cleaning real fast.
Great Product By MICHAELO on 9/30/2013
MICHAELO would recommend this product to a friend
Very well constructed and easy to change canisters, mounting option is cool. Makes use of space and utilizes 2 separate elements for individual change, Bottom line is, it makes life much easier! If you have a need for these elements then you have a need for this item.
Saves space in the sump By GainesvilleReefer on 8/8/2013
GainesvilleReefer would recommend this product to a friend
By using this over the regular GFO I was able to mix with the ROX carbon and fit in one reactor.
Great!!! By Garry on 8/1/2013
Garry would recommend this product to a friend
Really brings down Phosphate levels By Chris on 7/15/2013
Chris would recommend this product to a friend
Before I bought my GFO reactor I had a terrible problem with nuisance algae, especially hair. A few of the CUC ate it but it was growing too fast for them to keep up with, even when reducing the lights to only about an hour a day.
I'm amazed at the difference the BRS GFO made once I started running it. It has completely controllled the phosphate levels in my tank from on average 14ppm down to 0.0ppm and no nuisance algae. It's reduced it so much that I now how to supplement nori for the algae eaters so they don't starve!
I'd recommend this for anyone who's serious about controlling their Phosphate levels.
Excellent GFO By Joe on 5/25/2013
Joe would recommend this product to a friend
Keeps my phosphate below 0.003 ppm or 0.032 microMolar, which is the limit of detection with the Hanna Ultra Low Range phosphorous detector (HI-736).
Worked on my algea problem By lwillis22 on 5/14/2013
lwillis22 would recommend this product to a friend
This was recommended for my algae problem and I was sick of trying different things and them not working. This is pricy but you get what you pay for, works great!
Awesome By Jared on 5/12/2013
Jared would recommend this product to a friend
Awesome product. Works great. Will continue to buy. Highly recommended.
Great Stuff By Bob on 5/12/2013
Bob would recommend this product to a friend
This is the only way I can keep algae in check
Great Stuff By Bob on 5/12/2013
Bob would recommend this product to a friend
This is the only way I can keep algae under control
the best By Shaun on 5/6/2013
Shaun would recommend this product to a friend
The best gfo by far. Worth the extra money from tge regular gfo to the high capacity
Works just as they said it woud By Bill K on 4/19/2013
Bill K would recommend this product to a friend
Just added GFO in my new BRS dual reactor .Works just as they said it woud .Great product and great veideo to help set up with the tubling of GFO.
Great stuff By David on 4/13/2013
David would recommend this product to a friend
I have used both regular and HC GFO. I went with the cheaper regular last time and have regretted it. I highly recommend this product it lasts longer and requires less product to sufficiently do the job.
As good as the quality gets and great price for it By tyvek on 4/11/2013
tyvek would recommend this product to a friend
Very good quality and the price is very good too.
Helped remove all the hair aglae in my tank By Justin on 4/1/2013
Justin would recommend this product to a friend
I have used this twice on an off over a number of years, I had a pretty bad hair algae issue and I tried everything, after months of extracting and using phosphate removal stuff, I couldn't get rid of the algae. After adding this back in it took a little while, though no more algae.
I still get the green hue on the glass, though it takes longer now before it appears.
Awesome Product By Toby on 3/26/2013
Toby would recommend this product to a friend
I am using a brand new 6 stage BRS RO/DI unit with 150gpd upgrade and booster pump. Yet, I still get a light brown/green haze on the glass daily. I only feed frozen Mysid and Frozen Formula 1 every other day making sure not to over feed. With the exception of shrimp to the BT Anenome and and DT's to the corals. No hair algae or anything bad but that dang haze. Well Folks! No More! I added BRS High capacity GFO (by BRS Calculator) in the BRS GFO reactor and it was cleared by the next day! Actually it's been 3 days and I just went over the glass and really still didn't need it. Awesome Stuff! I only regret not adding this day 1.
Essential part of process to eliminate algae By Darcy on 3/7/2013
Darcy would recommend this product to a friend
I don't know why I didn't use this stuff sooner. Algae was growing faster than we could remove it. Instead of enjoying our reef tank it was becoming a burden. My phosphates were always on the high side but changing our feeding practices and adding cheato to the sump never seemed to substantially change the high readings.
I set up a reactor and added High Capacity GFO from BRS. The phosphate readings dropped markedly but the algae stuck around. It was less prolific and pale looking but it was still there. So, on the advice of a fellow reefer, we obtained a sea hare and let it go to work. After 3 weeks virtually all my algae was gone. We added a fresh batch of GFO to the reactor my readings stayed where I want them at about .04 and there's no resurgence of algae. It's been over 6 weeks with no trace algae and my corals have more color to them. Hopefully, we have this licked.
When I consider all the work we went through prior to this I don't know why we dragged our feet implementing GFO to our system. BTW, no sea hare was harmed in the removal of the algae. Once there was no more algae to consume our LFS gladly gave us store credit for the returned sea hare.
Awesome By ROB B on 2/27/2013
ROB B would recommend this product to a friend
I strongly recommend this product!!! And i strongly recommend BRS they have excellent customer service!!
AWESOME!! By Nathan on 2/21/2013
Nathan would recommend this product to a friend
Use this in a BRS Reactor and it works perfect, i use less than the amount needed and it still keeps my phosphates down
Another great BRS product. By JABlacher on 2/3/2013
JABlacher would recommend this product to a friend
Need to get your phosphates back in check? This is definitely a fix then. The key to using this GFO is to be regular in changing it and the correct flow through your reactor. A light wave in the surface of the media and changing it out after about 2 weeks works wonders for my tank. Thanks BRS for another great media!
Good but not perfect By John on 12/7/2012
John wouldn't recommend this product to a friend
Like most reefers, I use BRS because it's the best when it comes to a whole slew of aquarium parts/additives/equipment. The prices are right, the products are great, blah blah blah.
But I was/have been a little disappointed by this Ferric Oxide - High Capacity. The reasons being two fold...I think that there is a lot more dust and residue in the batch than can be rinsed out with a reasonable amount of water. The result is that your reef is cloudy for a day or two, and the skimmer pulls out what I'd consider to be A LOT of ferric oxide from the water column over the next 2-3 days. Some of you might be thinking "turn down the flow in the reaction chamber", but enough flow to make the ferric oxide tumble is enough to make the tank cloudy with the stuff (even after rinsing).
My second gripe with the product is that it forms itself into a solid block inside the reaction chamber that is really tough to remove. And the flow is not too low either because as I see flow going down I increase the power of the MJ 1200 with a valve and the stuff still forms a brick in the reactor.
Granted, like most things, it's cheaper to get it on BRS than say getting rowaphos, but I like this product better for my tank.
Still I gave 3 stars because it kept phosphates at 0, just the other two factors matter a lot to me. I know for a fact that it's not good for clams to filter ferric oxide out of the water. I almost lost a deresa clam because I didn't rinse my rowaphos once.
Much better than regular GFO By Aron on 11/29/2012
Aron would recommend this product to a friend
This is a much cleaner, longer lasting GFO than the other standard one that BRS offers. Yes it is more expensive but you get a lot more lifetime out of it and I think there is less tumbling that grinds the GFO particles into smaller pieces and eventually dust. Also out of the box after filing up the reactor there is less dirty water coming out of the reactor which is a plus.
new to product By Joseph on 10/27/2012
Joseph would recommend this product to a friend
I just started using this product. Easy to add to BRS reactor. Flushes quickly and doesn't have much fines.
Will review again after further use.
Great Stuff By Calvin Martin - Chicago on 10/26/2012
Calvin Martin - Chicago would recommend this product to a friend
Although a bit pricy, the High Capacity GFO really does out perform any other Phosphate removal media i have used.