works great By William on 3/14/2012
William would recommend this product to a friend
i had major algae problems but this has helped to keep my tank clean despite me wanting to have obese fish
great value By brian on 3/13/2012
brian would recommend this product to a friend
I had been using rhowaphos and switched over to brs gfo better bang for your buck.
works great By Scott on 3/5/2012
Scott would recommend this product to a friend
I bought 1 pound of this and i am very happy with it. Now i will buy bulk!
Return shopper By Cory on 2/28/2012
Cory would recommend this product to a friend
This is the third time I order my GFO from Bulk Reef Supply & I'm very pleased with there product and the prices. That stuff works great, its takes care of my Pos. & hair algae. AAAAAAAAAA+++++++++++++
Overall good By joseph on 2/28/2012
joseph would recommend this product to a friend
With the ues in a phosphate reactor and considering the price overall, its a good deal. 1 pound is smaller than I thought. With the use of a reactor about 3/4 full, you would proably get 3 times (use) out of it. I wish I started out useing gfo when I started my tank. Overall better than all the other brands because your buying just the gfo and not a gfo and carbon mix that other brand use.
This stuff is wonderful By Joshua on 2/27/2012
Joshua would recommend this product to a friend
I order this alot it does the job have no phos in my system I run this with a brs reactor and everything works as stated can say enough about this company its great
No more phosphates!! By Mike on 2/15/2012
Mike would recommend this product to a friend
This stuff works wonders, no more phosphate issues for me! Thanks BRS!!
This stuff works great! By BullDog on 2/15/2012
BullDog would recommend this product to a friend
I run this in my BRS reactor and I noticed my hair algae dieing off within a week. It's a must for me.
Great stuff By Joseph on 2/13/2012
Joseph would recommend this product to a friend
Well this is some good GFO. Ive used all kinds in the past and this seems to be much more durable than the brands ive used. With the right reactor and flow this can last a long time and not cloud up.
Great product By jake on 2/13/2012
jake would recommend this product to a friend
Greatly reduced algae
Great Product! By Brigette on 2/12/2012
Brigette would recommend this product to a friend
Love this stuff! Easy to use and does the trick!
Great product By Rich on 2/7/2012
Rich would recommend this product to a friend
Great product, easy to use decent value
Will lower phosphates By ARD on 2/6/2012
ARD would recommend this product to a friend
Use this to lower phosphates and in turn hair algea. I use it all the time in small quantities.
Good Phosphate Remover By Chris on 2/4/2012
Chris would recommend this product to a friend
I purchased a PhosBan Reactor 150 filter from Bulk Reef Supply and bought this GFO. It has helped me reduce my phosphates and eliminate problem algae. Be carful not to use to much as it can reduce your phosphates below where you may want them.
Works perfect in the BRS reactor By Lawrence on 1/30/2012
Lawrence would recommend this product to a friend
Great price and it very little clumping. I will never go back to phosGuard after using this product.
Good Stuff By mrakbokieman on 1/20/2012
mrakbokieman would recommend this product to a friend
Bought GFO with a BRS reactor and it works good. took care of my alge in 2-3 weeks, sweetness. Just wish i would have had GFO from the start.
good product By Cory on 1/2/2012
Cory would recommend this product to a friend
I have been using this for a few months in my brs dual reactor. Im happy with the results but for my size tank i have to use the max amount for the reactor. Though more expensive its a slightly better value to use the high capacity gfo and use half as much in the reactor. But for a smaller tank this would be fine.
Great By explorer22 on 12/27/2011
explorer22 would recommend this product to a friend
Bought this twice love it!
Great Product By V on 12/26/2011
V would recommend this product to a friend
I've been using this gfo in a BRS reactor and my phosphates have disappeared. I'm very satisfied!
Excellent! By Richard on 12/20/2011
Richard would recommend this product to a friend
Excellent product. This product seems to be a slightly finer grain then other GFO's I've used. The price is right and it fluidized well in my reactor...
Great Value By Emilio on 12/13/2011
Emilio would recommend this product to a friend
This stuff works better than the name brand stuff my LFS sells and there's much more here! Now i want to but a reactor to run this GFO and the carbon.
Great Value By Emont on 12/13/2011
Emont would recommend this product to a friend
Works great. Much less expesive than the name brand stuff at the LFS and i think i works better.
Great Stuff By Randolph on 12/13/2011
Randolph would recommend this product to a friend
I got this product after seeing many people using it on youtube, so far so good, my phosphates are nice and low and it works great in my phosban reactor 150
amazing By Raul on 12/13/2011
Raul would recommend this product to a friend
i always had a minor algae issue, but ever since i started using this gfo in my brs reactor 3 months ago i have zero algae problems. definately reccomend this
Awesome Product By Julian on 12/12/2011
Julian would recommend this product to a friend
Was in the midst of a serious new tank Diatoms explosion. A friend recommended this product to use in my reactor and within a few days my issues was lessening.
well worth the money By david on 12/8/2011
david would recommend this product to a friend
this has worked the best for me
A Great Value for High Performance By Joe Mac on 12/1/2011
Joe Mac would recommend this product to a friend
Like some other reviewers, I have used almost every brand of Granular Ferric Oxide (GFO) on the market over the years and BRS's Bulk GFO is undoubtedly the best for the price with very little sacrifice in performance. I give it 4 stars for performance because if you are willing to pay significantly more for other brands, they will perform very slightly better using the same amounts. I plan on purchasing BRS's High Capacity GFO when I run out of the "normal' capacity to compare. I anticipate that it will perform at or above that of the "premium" brands and the market (earning it 5 stars for performance), but costing approximately 33% more, will probably lower it's "value" score for me to 4 stars instead of this product's 5 (or even lower perhaps).
In my experience (15+ years at reef keeping), the use of GFO is way under promoted compared to its excellent utility. I have found it to be as fundamental for ensuring optimal conditions and parameters as are skimmers, calcium reactors (or kalkswasser/2 part solutions) or activated carbon (I know, I know... many don't use AC, but I'm a believer in its use also). Looking at the big picture, using GFO is one of the least expensive "costs" in being a continually successful reef keeper. It controls a vital parameter (PO4) that can cause devistation quickly and in low amounts.
An important caveat to remember is that many have observed deleterious effects by too quickly lowering high phosphate values, especially with SPS corals.
However, once you slowly get your PO4 to zero or near zero, consistent, continuous use of GFO will make your glass-cleaning magnet feel neglected!
I use BRS's GFO in a canister filter whose only other function is for pumping my aquarium's water through a chiller and holding small amounts of activated carbon. I keep both the GFO and carbon "sequestered" within the baskets of canister filter by using PURA Filtration Pads" (that I cut to fit with scissors) for the bottom and top most baskets. The canister filter also adds a little more water volume to the system.
The results of using BRS's GFO in this way have been outstanding. The only issue is that changing the media is a little tedious, so I'm very interested in trying out on BRS's "GFO Reactors", which appear to work under virtually the same principle, but should be much easier and quicker when it comes to changing out the media. If the price is right, the next review that you see from me may well be on one of those products (hint, hint BRS). ;)
From previous reviews here and on other sites, I am not quite sold on the "suspension-type" reactors due to the need for accurate flow adjustment (more maintenance) to keep the granules from either breaking each other up or from clumping too much). Although, clearly, their use would be far more efficient.
You will be impressed with this GFO.
GFO "Granular" Ferric Oxide By Virgil on 11/27/2011
Virgil would recommend this product to a friend
This item lowed my phosphates slowly as advertised. I will be buying it again to be used with my reactor. Don't forget there is a calculator on the site that tells you how much to add to your system.
Great to keep algae away! By Shaun on 11/24/2011
Shaun would recommend this product to a friend
I use the BRS RO/DI, reactor and this GFO i have no.. zero alge issues. for the money it is the best deal i could find. and its nice not having to worry about if it works or not. Piece of mind!
works great By Frank on 11/23/2011
Frank would recommend this product to a friend
works great. I had hair algae
Excellent By Robert on 11/23/2011
Robert would recommend this product to a friend
already seeing decrease in competing alge in my display
Works Great! By Bobby on 11/22/2011
Bobby would recommend this product to a friend
I use the granular ferric oxide in my MRC reactor and this stuff tumbles really well. I found it to be better in my particular setup than the high capacity because I have the extra space in my reactor and it ends up being cheaper.
Great! By James on 11/14/2011
James would recommend this product to a friend
Great Value, works well. Make sure you flush well.
Awesome phosphate reducer By Eric on 11/10/2011
Eric would recommend this product to a friend
I just ordered a gallon of this after trying it in my system. I was fighting cyno and since I added this it has disappeared. Great stuff good value a little dusty but that can be over looked
Great Stuff- easy to use By MICHAEL on 11/7/2011
MICHAEL would recommend this product to a friend
This GFO is a SUPER value compared to the competition. I've had nothing but good luck.
great product By Aide on 11/3/2011
Aide would recommend this product to a friend
Great price on a wonderful product. This stuff dropped my phosphates to nothing. I highly recommend it
Testing By Ja Nuken on 10/30/2011
Ja Nuken would recommend this product to a friend
Is this stuff Faked?
Great quality .. reduced my phosphates to zero By Scott on 10/29/2011
Scott would recommend this product to a friend
If you have phosphate problems this with the BRS reactor will solve your problem.
Good product By Anthony on 10/26/2011
Anthony would recommend this product to a friend
I had a GHA outbreak and started using this GFO product in a reactor and within 1 week I noticved a huge improvement. After 2 weeks everything was gone. It is now part of my regular tank maitenance
AMAZING PRODUCT By kyle on 10/26/2011
kyle would recommend this product to a friend
was battling diatoms, glass algae and gh algae frequently. bought a two little fishies reactor and this gfo. after one month the algae is gone and i am phosphate free! excellent product
Good By Daniel on 10/25/2011
Daniel would recommend this product to a friend
For a reactor, i say this product it pretty good. But as far as the "Granular" type is concerned i WOULD NOT put it in a filter sock. I thought since it was a 200 micron sock id be fine, well as far as the media making its way back into the tank it was ok but i guess from the water beating on it, it turned my water a awful brown even though i had rinsed it prior to putting it in my tank. Stick to the pellets....
Great Product By Marcus on 10/24/2011
Marcus would recommend this product to a friend
This GFO lasts me approximately 3 months on my 220 gallon system. It keeps phosphates below .03 tested on a hanna meter. I would definitely recommend.
Quick and powerful, results showed with hours By Juan on 10/14/2011
Juan would recommend this product to a friend
Quick and powerful, results showed with hours started seeing a differencd
worked great By John on 10/13/2011
John would recommend this product to a friend
This product works great. I installed a BRS reactor and am using GFO "Granular" and within 48 hours reduced my phosphates greatly. I have found a great company in BRS, quick shipment as advertised. This company BFS and there products were recommended by an employee of a local aquarium store, he told me is the best he has seen and uses it at home, instead of what they sell.
quality stuff for a great price By Jonathan on 10/12/2011
Jonathan would recommend this product to a friend
great gfo for a great price. i have a large tank and i have to use a lot of product. so for me there is no other choice out there.
It Works By Ryan on 10/12/2011
Ryan would recommend this product to a friend
It works the same as the rest for a fraction of the cost. I can change mine out monthly and not have to worry about the cost.
very good By chefrobson on 10/10/2011
chefrobson would recommend this product to a friend
This product works better than most other products I have used in the past. The price is also almost half!
Works By Brian on 10/8/2011
Brian would recommend this product to a friend
helps out my tank a lot!