Phosphates stay right at 0 By Matt on 1/15/2014
Matt would recommend this product to a friend
I use the GFO in a fine mesh bag in my canister filter. It keeps my Phosphates right at 0 unless I feed heavily, then it pulls them right back down by the next day. The grains are very small, use a fine mesh bag if you need a bag.
This stuff is REEF MAGIC By Vince on 1/14/2014
Vince would recommend this product to a friend
Don't even bother with the cheap imitators, this stuff not only is cost effective but it takes a while to deplete. Be careful to dial in the right amount or you can have a huge drop in your P04 and can harm some corals, I noticed I couldn't get my p04 under ~.5 until I ran this in a reactor which I only recommend.
Works! By Keith on 1/14/2014
Keith would recommend this product to a friend
Works perfectly, my tank is phosphate free!
Fingers crossed By Renee on 1/13/2014
Renee would recommend this product to a friend
This is the first time I am using this. I usually buy the high capacity gfo, which is a great product., but it is sooooo expensive, I decided to try this. I haven't noticed any bad differences, so I am rating it great. But I am keeping my fingers crossed that I did not make a mistake.
Great GFO By TremontReefer on 1/13/2014
TremontReefer would recommend this product to a friend
Great GFO. No issues. Keeping phosphates down well.
Excellent standard GFO By George on 12/30/2013
George would recommend this product to a friend
I used this before I bought the high capacity GFO. Unless the high capacity is on sale, this is the way to go. Inexpensive and an excellent way to control algae!
Did it's job By Chris on 12/24/2013
Chris would recommend this product to a friend
Product brought my phosphates down however it is very fine and I had to reduce my flow rate dramatically in my reactor. I have since started using another product which is way more granular and I am able to increase the water flow to my reactor thus getting more water treated.
With BRS however you get way more product for your buck. So it's hard to beat
Great product By brian on 12/19/2013
brian would recommend this product to a friend
Ordered product to mix with carbon to remove phosphates it did so and overall water quality has improved
VERY dusty. By Quinnchero on 12/18/2013
Quinnchero wouldn't recommend this product to a friend
I realize I'm spending a little less on BRS products and shouldn't expect the world out of them. With that said, the GFO arrives very worse for wear, seems like the packing guy shook the container on a paint mixer for an hour or two! easily 1/3 of the pound was entirely useless; making the purchase actually WAY over priced for usable product. Sorry BRS, I LOVE your store and most of your own branded product, but this one has failed me a few times now.
Great product at a great price. By David on 12/14/2013
David would recommend this product to a friend
I bought a gallon of this. It's does what it says... I change it out every 3 weeks and my phosphates stay at 0.
fair By Dustin on 12/11/2013
Dustin would recommend this product to a friend
works ok. i run it in 2 reactors for my 300. feed responsibly and I still have some phosphate. A little on the pricey side IMO for how it performs
Good stuff By Dioncuda on 12/8/2013
Dioncuda would recommend this product to a friend
It does work very well, great for the money.
Good Product! By Jake on 12/7/2013
Jake would recommend this product to a friend
Good product! tumbles well, not much dust at all, and does what i want it to do!
Excellent product By Mrehfeld on 11/23/2013
Mrehfeld would recommend this product to a friend
This product is excellent and does what it's meant to do! See my other review on the GFO reactor.
Great product By Ray on 11/5/2013
Ray would recommend this product to a friend
Great product for a great price.
DON'T OVERDOSE By Daniel on 10/31/2013
Daniel would recommend this product to a friend
Works great if dosed responsibly, BRS has a great calculator. I accidentally used too much and it turned my tank very cloudy.
Good product By A.R. on 10/19/2013
A.R. would recommend this product to a friend
Great customer service and fast shipping. As the product itself is good but very slow process. Overall good product and addition to the reef environment if you are having algae problems.
A fair deal on a reef maintenance staple By raysun on 10/14/2013
raysun would recommend this product to a friend
At $22.00 for a pound, it's hard to argue the price for standard capacity GFO. It comes packed dry and pretty much dust free so media changes are easy. Little if any residue rinses out when first loaded into a media reactor or filter bag. (Contrast RowaPhos, for example, a fine product too, but it seems to emulate the Mississippi river for brown flow when first rinsed.)
To maintain my LPS tanks at their current low phosphate levels, this does the trick. When levels rise to 0.05 ppm, I change the media. Within hours phosphate levels drop to undetectable.
If I had a big phosphate problem, I'd consider springing for the High-Capacity (and high-cost) GFO to get more phosphate removal between changes. Large bio-loads, heavy feeding, or new rock that leaches phosphate might weigh into that decision.
At a recommended usage rate of 1 tablespoon per 4 gallons of aquarium water, large aquariums would use a fairly large dose of this stuff. 100 gallon tank would use just shy of 1 1/4 cups per media change - a bit more than 12 media changes for a gallon of GFO. Really large setups will probably benefit from using the HC GFO.
Best value By Dennis on 10/5/2013
Dennis would recommend this product to a friend
A great value for use in reducing phosphate levels. Water quality has steadily improved in multiple large reef tanks with heavy fish loads. Corals love it.
6 month review, intermediate/ advanced reefer. By Join the Revolution on 10/4/2013
Join the Revolution would recommend this product to a friend
Good product. Not great. expires quickly if you have a phosphate issue.1 week tops until a change out is due if you already have GHA. This product may work great for a low nutrient established tank with a fuge, killer skimmer, and methodical husbandry. I don't own a killer skimmer, (its stock on my 25 gallon Ecoxotic cube), nor do I utilize a refugium. My husbandry is anal-retentive. Therefore I rate this product a 3 out of 5. I am now changing it out weekly until it runs out. Afterwards I will stick with Rowaphos or try BRS high capacity. Either way, I will report back with informative comments. I will always buy from BRS because of their products, website design, and most importantly their relative and educational videos.
Best Price By Mario on 10/3/2013
Mario would recommend this product to a friend
Honestly by far the best GFO I've used, you get the most for you money and then some! Happy customer!
Great product By Dylan on 9/24/2013
Dylan would recommend this product to a friend
Most cost effective phosphate solution works great in my BRS Dual Reactor
Another Great BRS Product By Deadpool on 9/20/2013
Deadpool would recommend this product to a friend
I have to say this product along with many other BRS products have really out done themselves. Everything is dedicated to the Reef Aquarium Hobbyist. This product does not fall short of BRS standards.
Great product at a good price By Mark on 9/17/2013
Mark would recommend this product to a friend
Great product at a good price, the only GFO I use
Great By John on 9/13/2013
John would recommend this product to a friend
Great gfo, Does what it is said to do, Change mine ourt of the BRS dual reactor once a month and works great on controlling algae. One of the first smart buys when setting up Your tank !
Great product By Roy on 8/23/2013
Roy would recommend this product to a friend
I use this on my ulns 90 gallon aquarium in a BRS dual reactor and it works well for me. I also run bio pellets and I use this product to help keep my phosphates low when my pellets can't. I have a valve on my reactor so I can fine tune how much PO4 the GFO is removing.
Does what it says By Heifinator on 8/19/2013
Heifinator would recommend this product to a friend
Removes phosphates well, simple as that.
works great By Brian on 8/15/2013
Brian would recommend this product to a friend
Works great, saw a difference the next day. Does have a lot of dust in it though but the price is right.
Great Value Geat Product By mltnguyen on 8/8/2013
mltnguyen would recommend this product to a friend
This product came well packed and had very little dust. A++ BRS
Good By Yunier on 8/6/2013
Yunier would recommend this product to a friend
This will lower your phosphate and great price for quality items.
Excellent Product By Tankjunkie on 7/30/2013
Tankjunkie would recommend this product to a friend
I've been using GFO from BRS for awhile and have no complaints. Keeps phosphates in check very effectively. I always recommend GFO to anyone having phosphate issues.
Use it on all my tanks By William on 7/22/2013
William would recommend this product to a friend
I absolutely can't do without the BRS bulk GFO. It drastically improved the water quality of all of my aquariums. A 180gal reef tank and a 110gal fish only. Phosphate levels are almost not existent now after using the GFO, especially in the dual GFO and carbon media reactor.
great product By Bob on 7/11/2013
Bob would recommend this product to a friend
this has cured my algae problems before. I now dont run a saltwater tank without it.
I'm Sold! By Eric on 7/5/2013
Eric would recommend this product to a friend
This stuff is the most cost effective phosphate solution I have found. Could not be happier with the product.
Cant do without it. By Randy on 7/1/2013
Randy would recommend this product to a friend
Everytime I run out of this thing and think I am doing well, I have to run and get some more. Awesome product
Worth the money! By John on 6/28/2013
John would recommend this product to a friend
Easy to use, have used different brands of GFO in the past. After adding BRS GFO, algae problems have reduced to nothing!
gfo quaility By hunter on 6/25/2013
hunter would recommend this product to a friend
Ordered up some of this gfo.. Samre as the carbon seems to be doing a good job so far. Also did not notice much waste when rinsing it off.. huge deal for me when your looking at gfo prices..
GREAT PRODUCT AT A GREAT PRICE!!! By Dolmo5000 on 6/25/2013
Dolmo5000 would recommend this product to a friend
BRS does it again! I have looked far and wide for GFO at a cheaper price. Although there are a very few places advertising it for a cheaper price reviews of the product say it contains lots and lots of dust. I believe that BRS sells a fantastic product and will purchase GFO and all other bulk additive from them as long as I'm in the hobby (rest of my life). GREAT JOB BRS!!!
now winning the battle By algae victory on 6/13/2013
algae victory would recommend this product to a friend
Had a pretty good algae bloom in reef tank 1yo. Never used GFO decided to give it a try in my sump sock. Day two seeing significant results oh and new sock was green after day one.
Instructions on package were confusing By Charles on 6/12/2013
Charles would recommend this product to a friend
I got this from a friend that had taken down his tank. I am overall satisfied with the product itself, but the instructions were confusing and I believe i used way too much after the initial period. I got some clarity on it with the calculator. My pump went up on me for a couple days and i started noticing algae growth almost instantly. Got a new pump and did a water change and the GFO did the rest.
Good quality GFO By Bill on 6/7/2013
Bill would recommend this product to a friend
This GFO works well and is very cost efficient way of removing PO4 in any aquarium. No problems does exactly what it is supposed to do.
I do find that it has more fines to be rinsed than some higher quality GFO (RowaPhos).
Best on the market By MAREK on 6/5/2013
MAREK would recommend this product to a friend
Absolutely best GFO on the market. I'm always buying only from BRS. Perfect fro BRS GFO reactors. Excellent quality.
effective and good price By Mike on 6/2/2013
Mike would recommend this product to a friend
Used regularly it has transformed my reef from an algae jungle to a coral jungle!
GFO Works By AC on 5/15/2013
AC would recommend this product to a friend
With the use of the BRS GFO I have removed just about all my algae problems in my tank.
SOLID PURCHASE!!! By Dolmo5000 on 5/6/2013
Dolmo5000 would recommend this product to a friend
Although I find the need to flush BRS gfo more than others I have used in the past, the cost difference more than makes up. Another solid product out of the BRS team!
Not sure yet By Michael on 4/29/2013
Michael would recommend this product to a friend
Have been using for about 3 weeks so far with no change in my phosphate level. Doing water changes also. Need more time to evaluate not sure about recommending yet. Phos Ban maybe better.
Great Stuff! By Edward on 4/26/2013
Edward would recommend this product to a friend
Made the mistake of trying a different brand after using BR GFO; I'm back!
it really does work people so buy it! By dimitri on 4/18/2013
dimitri would recommend this product to a friend
i am running my gfo thought the BRS Dual Reactor its amazing and completely worth it buy it you will not regret it. fixed my tank and all the algae problems it had.