Magic By randy on 11/18/2015
randy would recommend this product to a friend
BRS GFO high capacity works great on my tank. Nuisance algae is gone since I'm using this brand with BRS dual reactor. Just follow the recommended dosage and you're good to go.
Necter of the gods!!! By Reefinman on 11/18/2015
Reefinman would recommend this product to a friend
This stuff is great!! Keeps the algae in check. My tank never looked so good.
Worth the money, works incredibly well By Amy on 11/10/2015
Amy would recommend this product to a friend
Bought this product to help 'rehab' a neglected tank. Phosphates were through the roof, too high to register with our Hanna checker (over 2.50ppm). Added HC GFO to a BRS dual reactor and saw IMMEDIATE results. Within 72 hours phosphate levels were well below 0.5ppm and still falling.
Needs no real rinsing, just let the first little bit of water that leaves the reactor flow through some floss and a filter sock, to collect the fines (or discard the water). Tumbles beautifully in a reactor, we've had no issues whatsoever with clumping or pieces breaking down into fines.
Lastly, when compared to regular GFO, this stuff is denser; at first glance it looks WAY more expensive, but compared by weight it's not a huge difference and it's worth it. We use regular GFO for maintaining non-problem tanks, but if you have a high-load tank, you're dealing with a major phosphate issue, repairing long-term neglect, it's worth laying out the cash for this stuff -- it's not a gimmick, it definitely works more intensely than the standard GFO.
Highest quality GFO I've ever found By Adam on 11/9/2015
Adam would recommend this product to a friend
No clumping, huge capacity, easy to work with, and keeps my phosphates in check like nothing else I've ever used. I really can't say enough about this product other than it is the best I've ever found. Period.
BRS Bulk GFO Granular Ferric Oxide - High By steve on 9/6/2015
steve would recommend this product to a friend
nitrates were high 10ppm then two weeks later 0ppm wow You need to get this now.
Works as advertised By Mrod on 7/28/2015
Mrod would recommend this product to a friend
Very satisfied as it works as others have mentioned. My Phosphates were always a struggle with a nano tank and no skimmer - this is the first media to actually make a noticeable difference,
Gradually coming down each week and happy with the results thus far!
Excellent GFO! By Pegasus on 7/27/2015
Pegasus would recommend this product to a friend
I started with BRS HC GFO, and if the day comes, I will end with it as well. Rinses clean almost immediately, and does an outstanding job of removing PO4. Levels stay near-undetectable, even with my heavy feeding habit. IMO, it's worth the extra cost to not change it as often. 15% water changes every two months of so, and my fish and corals are thriving! Highly recommended product!!!
Great phosphate remover! By Ae86oni on 7/22/2015
Ae86oni would recommend this product to a friend
Good quality gfo! Does exactly what it's supposed to do. Keeps my phosphates in check. I did have 1 issue at first, but it was my fault. I was having an issue with it clumping together in less than a week, even though it got plenty of flow. After tons of research, I found out that having a low magnesium level will cause this to happen. Another tell tale sign of low magnesium is your pumps quickly getting covered in a calcium deposit. If you run a gfo reactor, make sure your magnesium level is in check. Will solve the problem!
Good GFO just very Expensive By Christopher on 7/15/2015
Christopher would recommend this product to a friend
I bought this GFO when i first started reef keeping. Keep phosphates at 0 always. However, it was a really cost to buy this. So I switched to RowaPhos, still good. But now have a small algae outbreak.. thinking about switch back! This GFO is amazing if you can afford!
Seems pretty great By Damon on 6/10/2015
Damon would recommend this product to a friend
Virtually no dust so rinsing is quite fast. Fluidizes very well and doesn't seem to break down like RowaPhos... Also seems to pull a bit more phos compared to RowaPhos but not sure if this is fact or perception. Overall, I like it!
Works Great By Brian on 4/28/2015
Brian would recommend this product to a friend
I use this for phosphate removal on both my 150 reef and my 65 gallon predator tank. I usually change it out every 6 weeks and use a reactor for it. I check my phosphate's weekly using a Hanna checker and rarely do I get anything above a .02.
Good stuff By John on 4/11/2015
John would recommend this product to a friend
Seems to remove a little less PO4 than ROWAphos, but is much easier to use. Not much dust when rinsing before use. Works well in BRS deluxe reactor, slightly fluidized, without the sponges installed. Just started regenerating it, which seems to work well.
Good product By Tripp on 4/1/2015
Tripp would recommend this product to a friend
Using the high cap GFO. Can't compare it to standard, but it is very effective in PO4 removal. Definitely use a small amount when starting out. I used 1/2 of the recommended starting amount and built up slowly from there. Didn't have any issues
FRICKIN AWESOME By Wrath of Poseidon on 3/6/2015
Wrath of Poseidon would recommend this product to a friend
i have lots of fish lots of corals in a 150g can go 2 months with out what changes
Very Happy By Benjamin on 3/5/2015
Benjamin would recommend this product to a friend
Been running the HIgh Capacity GFO for two years in two different tanks. On my 90gal. I have the BRS dual reactor with GFO and Carbon. Since running the HIgh Capacity GFO, my phosphate levels are non existant.
GFO high cap By Mr. Fish on 3/5/2015
Mr. Fish would recommend this product to a friend
Great product love it!
Solid Product By MarkO on 2/28/2015
MarkO would recommend this product to a friend
Works. Noticeably higher capacity than regular GFO. Not sure how much, however.
Easy and efficient! By Tony on 2/26/2015
Tony would recommend this product to a friend
Using with a mix of Rox carbon in my Deluxe BRS reactor and ran clear almost instantly!
Great start By Ken on 2/14/2015
Ken would recommend this product to a friend
Its the perfect size to get your new GFO reactor off to a great start
Great product, but a bit $$ By Submerge on 2/4/2015
Submerge would recommend this product to a friend
You get what you pay for. This GFO works well in a bag in the sump. It doesn't clump if kept in a high flow area. I just massage it around every few days for "general principle". It does a great job at keeping the phosphates low, about 1/10 of what they were before.
Amazing product! By David on 1/14/2015
David would recommend this product to a friend
I was continuing to have issues getting my Phosphates down to a negligible amount. I was dosing all sorts of products in an attempt to get the counts down. I installed a BRS Reactor with High Capacity GFO and crossed my fingers. I installed it three days ago and today my reading was 0.05! I can't say enough positive things about this product. Thank you BRS!
I'm sold, will never run without it. By Bruce on 12/14/2014
Bruce would recommend this product to a friend
Was having phosphate issues on my 90g mixed reef tank so I thought I'd give it a try after reading the other reviews....they were right! I am running a BRS single reactor and mix about 1 part High Capacity GFO & 2 parts BRS Premium ROX Carbon. After a week I was convinced my Hanna Checker was broken because it kept coming up 0 phosphates...there was nothing wrong with my Hanna. Been using this about 6 months now and have had no phosphate issues or no ill side effects. I didn't think I really needed the carbon but carbon is cheap and has it's benefits, and with the mix you don't have the hassle of tweaking the flow to try to maintain the right amount of tumble.
BRS BULK GFO-High Capacity By mt88 on 12/13/2014
mt88 would recommend this product to a friend
after 2months battle with algae, system running with algae scrubber, refugium, large protein skimmer, with all that running I decided to install and use this product, never thought it would work but after 5 days came back from vacation things really improved and all my sps corals starting to look happy and fish get to eat a little more food.
Thank you BRS!
Great Product By Evelio on 12/9/2014
Evelio would recommend this product to a friend
I have used several different types of GFO products and this one gives us the best performance vs cost
Great product By dolpator on 11/23/2014
dolpator would recommend this product to a friend
This is the only GFO that I use, it keeps my phosphates levels low to nothing. I use it with BRS media reactor with out issues. Great product would recommend it to any one needing g to remove phosphate in their systems
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