Bought this for my 180 gallon reef and let me tell you... I noticed my algae started to subside and my water was noticeably clearer. Buy it!

SO FAR SO GOOD USE THIS FOR MY DUAL REACTOR!

Must have for any aquarium.

overall product is good, bulk quatity makes it a great value. be carefull not to use to much to fast. been using for consistantly for a year then didnt change for month. Changed out a big portion, caused a few sps to completely bleach so be carefull

I just wish is wasn't so expensive.

Low dust, easy to use. Works better than name brands IMO.

Have not had a single issue with phosphates since switching over. Love it

Added the BRS GFO to my BRS single reactor. Works Great!! Brought my phosphate readings down to 0 in a matter of a couple days. Great product!

this has to be one of the best purchases I have made for my tank. It helped me defeat an algae outbreak and i have used it since.

In terms of the quantity of phosphate removed, this GFO performs very well. I use it actively in a BRS reactor and had zero problems. However, it does produce more fines when initially flushing the media, and from what I've read, the high capacity stuff holds up better during regeneration because it is more dense.

Does what it has to do. Order big size.

About 1/3rd the price of brand name. Works great.

This product does a great job. In conjunction with a reactor I would reccommend to anyone.

Hey Fellow reef enthusiasts - I have a 29 gal Bio-Cube reef system with HQI - that has an overflow to sump, and heavy filtration. My tank is very clear all the time, but I was still having minor issues with some brown algae here and there. Immediately and within days of starting to use the GFO in a non conventional reactor chamber, using about 1/2 a pound of the GFO in a mesh bag - I immediately noticed that my algea break out issues went away... My tank was clear of all algae and has been since then. This brings me to two days ago. I decided to do some maintenance and I un-plugged my pump to the GFO chamber (due to time constraints and a partial issue that needed attending)... I set aside the project for the next day... Unfortunately, two days have passed. I noticed some brown algae the next day - then by the second day - my tank was almost brown. I was like freaking out - I then, realized what had changed, and that I hadn’t completed my GFO maintenance - What a Maroon! is all I have to say!!!!!... Well, I have replaced the GFO with a fresh batch, re-connected the reactor and within two hours of re-connecting it, I could already tell the difference. I love this product - it’s expensive, but well worth it. I can’t live without it. I will be ordering more. I am also going to be adding some to a home made fluidized chamber, plus to the high flow area of my sump - I will report again on any further changes. Don’t go without it. This stuff is worth every penny.

Brought my phosphates down considerably. Easy to wash.

Definitely does the job. I find the granules produce less “dust” than the pellets. Rinsing the media with RO water to start does a good job at clearing the material of dust before introducing it into the system.

After using this product I have seen the a
Gae accumulation on my glass drastically decrease...no more scrubbing of the glass everyday.

You can't go wrong with this gfo great price and great quality but I expect nothing less from brs ! This gfo rinses much quicker then other gfo that I have used and I get the same high end stuff as the big names .AAA+++++

BRS's GFO is high quality. I have used more than 4 pounds of it. It has low amounts of powder so rinsing it doesn't take long at all.

I have been using BRS gfo for about two years now and it's always helped me keep my phosphates in check and my tank algae free. Highly recommended!

You can't beat these prices, works great a++a++

Works great! Seems to be a better value than the higher grade stuff

Use this in my BRS 2 part reactor and it works really well!

best bang for your buck, a little goes along way.