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

415 Review(s)

Choose a size

1 lb
SKU: 000600

reg. $21.99

Special Price: $18.69

1/2 Gallon (2 lbs.)
SKU: 000601

reg. $39.99

Special Price: $27.99

1 Gallon (4 lbs.)
SKU: 000602

reg. $61.99

Special Price: $52.69

5 Gallon (20 lbs.)
SKU: 000603

reg. $269.99

Special Price: $229.49

  • Works very well By Pete on 11/20/2015

    I use the GFO in the BRS dual reactor with carbon. Works wonderfully! Would definitely recommend it to anyone looking to control phosphates.
  • very fine like powder. By Sean on 11/2/2015

    Works good at keeping phosphates down. I don't like how fine it is. Some can make it threw filter.
  • BRS Bulk GFO Granular Ferric Oxide By vapor160 on 10/15/2015

    Working just like it should. don't know why I didn't do this sooner.
  • Seems good. By clockman on 10/9/2015

    Like the title says. Seems like it does the job. I don't bother measuring phosphate in the water. I'm a bit lazy.
  • Works well! By Robert on 10/2/2015

    The only issue I have is that the GFO so fine that I have to keep the flow very low or use multiple filers not to get a lot of fines in my tank. Work well after finding a balance of flow and filter pads.
  • Great Product, Affordable Price By Robert on 9/15/2015

    I run this product in my reactor. Phosphate levels stay below detection. Water, rocks, and sand are algae free. I wouldn't run my reef aquarium without it!!! The best part is that a little goes a long way and it's not bad on the pocket either!!!
  • BRS Bulk GFO By steve on 9/15/2015

    good stuff
  • Bulk GFO Granular Ferric Oxide By Bill on 9/14/2015

    I believe this works pretty well. The only problem with this type is that it is very, very fine. In fact, almost like powder. I use a reactor and have to use 2-3 sponges because it is so fine. They really need to make the particles larger
  • Great stuff By Kris on 9/7/2015

    Hits the sweet spot on affordability and cost.
  • Order again and again By Michael on 8/28/2015

    My order was a restock. I find this grade of GFO to be beneficial. Lower fines than others. I circulate a new batch for 5 minutes offline with RO water to remove the fines and have sen no problem when I put it online.

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