BRS Bulk GFO Granular Ferric Oxide

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  • Remove phosphates from your tank with Granular Ferric Oxide

BRS Bulk GFO Granular Ferric Oxide

459 Review(s)

Choose a size

1/4 Gallon (1 lb)
SKU: 000600
Preferred Reefers earn 105 points
1/2 Gallon (2 lbs.)
SKU: 000601
Preferred Reefers earn 195 points
1 Gallon (4 lbs.)
SKU: 000602
Preferred Reefers earn 305 points
5 Gallon (20 lbs.)
SKU: 000603
Preferred Reefers earn 1,345 points
  • great product By on 4/19/2017

    Run this media thru a the BRS reactor with great results. Keeps my Phosphates in ckeck and last longer than the other brands i have used.
  • Works Great By on 3/30/2017

    Have had it running for about a month now and has significantly maintained my phosphate at ultra low levels
  • Great product! By on 3/16/2017

    I've used several different gfo's, mainly rowaphos. I prefer this product much more for several reasons- it's cheaper, better and much more cleaner. I found with rowaphos I would have to run my reactor with at least a gallon of water before it comes out clear. With this gfo it took probably less than half a gallon! Highly recommended
  • Still waiting for results By on 3/9/2017

    So far after 2 weeks of use in a BRS GFO & Carbon Reactor - Deluxe I have seen no reduction in phosphates. After reading all the reviews I am disappointed in the results that my tank is showing. At this time I am not giving this product a good review, I will update at a later date if and when I see some positive results.
  • Best GFO on the market By on 3/6/2017

    I really like the BRS GFO. I find that it is the best value and best GFO that you can buy. I change mine once a month and it makes a big difference in the Phosphate levels. Great for controlling algae and a bargain price.
  • Good Value By on 2/23/2017

    I use this GFO in a spyglass reactor to reduce phosphates, which subsequently also assists with algae control in my reef tank. It's price makes a good value.
  • Makes a difference By on 2/16/2017

    I use it every month to help with algae control you can tell it works
  • Low phosphate levels By on 1/29/2017

    I really like this product. I use it in media bag in my aio sump and my levels have been low and barely any algae.
  • Amazing Product By on 1/10/2017

    Noticeably helps with algae almost immediately
  • Good By on 12/17/2016

    Change GFO monthly. I can tell by looking at the algae in my tank if I am late doing the change.