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BRS Bulk GFO Granular Ferric Oxide - High Capacity

  • Keeps PO4 in check By danny on 7/31/2014

    Very low dust unlike other types of GFO & you use less of it to achieve the same results which reduces stress on your pump. My PO4 levels are around 0.03 ppm using the HANNA CHECKER.
  • Best GFO on the market By Sean on 5/26/2014

    This is the best GFO I have used before. It lowers my Phosphates better than any other product on the market. The corals have noticeably become more colorful as well. Good product!
  • Regular vs Hi-Cap GFO By Drew on 5/11/2014

    I goofed and ordered Regular GFO instead of the Hi-Cap that I normally order.
    YES.... there is a difference.... My Phosphate levels have reacted accordingly.

    I have double the PO4 than I normally have when using the Hi-Cap.

    FYI!
  • High Capacity GFO. By Śruba on 5/10/2014

    I would buy it again because this media works very well for me. Try it yourself and see what I mean.
    Thank you BRS.
  • Look no further! By MUSBFRANK on 4/30/2014

    Let's just say I had a serious phosphate problem and tried several other medias. I put the recommended amount of GFO in a nylon sock and pumped water through it with a powerhead. It's a 750gal reef tank and the phospates had soared up to 2.0, after putting the GFO I tested the water roughly 3 days later and they were barely detectable. Can't say enough about this stuff and I will never use anything else!
  • Works Great!!! By Andy on 4/4/2014

    2nd time ordering & works great with fantastic results..ie perfect water parameters.
  • Very good at removing phosphate By KEVIN on 4/2/2014

    Works great. It's a little pricey but it does what I need
  • great stuff By Chicago on 3/25/2014

    nice and clean. I use in my reactor. With other brands took like 15 gallons until clean and clear water was following. With this high capacity only takes like 5 gallons to run clean. Love it and would recommend for all phosphate issues. Of course you cant beat the BRS service and price.
  • Best way to keep my phosphates low By Michael on 3/18/2014

    I run this GFO in my 90 gallon mixed reef tank. Have it running in a 2 Little Fishes reactor and it works great. Replace every 4-6 months and my phosphates stay at zero. Highly recommend.
  • great product By angelo on 3/17/2014

    been using this product since i started my tank. never had an issue with phosphates. lasts a long time and only have to use a little bit.

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