BRS Bulk GFO Granular Ferric Oxide

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Granular Ferric Oxide (GFO) removes phosphate from the aquarium and is one of the most commonly used filtration medias used in the aquarium industry.  GFO is one of the few ways to easily maintain ultra low phosphate on a consistent basis. Maintaining these ultra low levels will help prevent algae outbreaks as well as treat existing algae issues. Your aquariums glass will also stay clear and free of the green hue significantly longer. GFO is most commonly used in a media reactor like the BRS reactor or media bag.


Phosphate inhibits proper coral growth by incorporating itself into the corals skeletal structure which makes it difficult for the coral to grow by laying down additional calcium and carbonate (alkalinity) ions. Maintaining ultra low phosphate levels will increase the growth of any SPS or LPS coral.


Algae outbreaks are one of the most common reasons for a complete tank shut down. We recommend preventing them by maintaining an ultra-low nutrient level environment where it would be difficult for them to get out of control to begin with. It is much easier to prevent outbreaks than it is to treat existing outbreaks.

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  • Quick Overview

Granular Ferric Oxide (GFO) removes phosphate from the aquarium and is one of the most commonly used filtration medias used in the aquarium industry.  GFO is one of the few ways to easily maintain ultra low phosphate on a consistent basis. Maintaining these ultra low levels will help prevent algae outbreaks as well as treat existing algae issues. Your aquariums glass will also stay clear and free of the green hue significantly longer. GFO is most commonly used in a media reactor like the BRS reactor or media bag.

Phosphate inhibits proper coral growth by incorporating itself into the corals skeletal structure which makes it difficult for the coral to grow by laying down additional calcium and carbonate (alkalinity) ions. Maintaining ultra low phosphate levels will increase the growth of any SPS or LPS coral.

Algae outbreaks are one of the most common reasons for a complete tank shut down. We recommend preventing them by maintaining an ultra-low nutrient level environment where it would be difficult for them to get out of control to begin with. It is much easier to prevent outbreaks than it is to treat existing outbreaks.More

BRS Bulk GFO Granular Ferric Oxide

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Full Details

GFO comes in two types:


  • Granular GFO is varied in its shapes and requires the least amount of flow to tumble. Good for reactors.
  • High Capacity GFO is twice as dense as Granular GFO, so twice as much material will fit into a reactor. It's extremely hard and has less dust to begin with. Fewer fines will be created during use and transportation. By volume High Capacity GFO will remove roughly twice the phosphate compared to Granular GFO. Best overall performance.

 

Special note on fighting existing algae problems: Algae needs three main nutrients to grow: phosphate, nitrate and light. Reducing any one of these will significantly slow down algae growth but many not completely solve your issue. Once algae takes hold, it can be a difficult battle but it is winnable. The best offense against algae is to take preventative measures and attack before an outbreak is apparent. Use the following suggestions and be aggressive if an algae problem is already present:

 

  • Maintain undetectable phosphate levels with good feeding habits and use of a phosphate remover like GFO.  99% of all phosphate is added via foods added to the tank.
  • Control nitrate levels by reducing feedings, increasing the water change schedule and maintaining a properly sized protein skimmer.
  • Use nutrient free RO/DI water for water changes and top off water
  • Shorten your lighting period or intensity. In some cases aquarists have found replacing old bulbs that have fallen out of their intended spectrum helps as well
  • Continuously remove as much algae as possible by hand.
  • Add predators nothing helps an algae outbreak as much as critters who eat it all day long. Various tangs, lawn mower blennies, crabs and snails are all good options. It is also theorized that a healthy pod population will also control algae growth before it gets a chance to take root.

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Reviews

  • Good Product By Jason on 1/22/2015

    Good Product
  • a must By Christopher on 12/24/2014

    This works wonders if you follow the instructions. I've been running it for close to a year now, and it is a staple for sure. You must use the correct amounts, and you must change it out. Don't expect results if you are to frugal with it.
  • Good Product By Wade on 12/23/2014

    Been using a cup of this in my reactor for about two weeks and i can already see a difference in my tank. Algae is almost gone. Phosphates are virtually at 0 now. I will continue using this product as long as I have an aquarium.
  • It works like it should By Mark on 12/23/2014

    I've been using this in a filter sock in my hob filter. Although not the most efficient use of GFO it still does a great job of keeping my phosphates low. I only wish I had a larger setup so I could use a media reactor.
  • Good stuff, a bit dusty By Ryan on 12/10/2014

    Just make sure you rinse it well before placing it in the system obviously. It does contain a fair amount of dust, but does the job once installed. No complaints here, you get a lot for what you pay for.
  • for the price By justyn on 12/4/2014

    A great product for the price. I run gfo a long side my carbon and changing this product out gets expensive, once I found out about BRS I was hooked with them.
  • Excellent gfo for the price. By Roger on 12/3/2014

    Using this gfo has greatly helped me keep my p04 levels down to a minimum. Compaired to the expensive other brands it's crazy not to buy this stuff.
  • Good Prod By jawstone50 on 11/29/2014

    Increasing the frequency off my GFO changes has decreased the speed at which my Hair Algae problem has returned. I will keep this frequency pace to hopefully completely eliminate the algae problem all together.
  • Great product, great price! By Jdubs on 11/24/2014

    I run a 37 gallon heavily stocked with fish and LPS corals. This stuff removes phosphates FAST! Just make sure you use a reactor and don't just put it in a media bag you will never get the same results just running it in a media bag in a external filter. Keeps my reef looking pristine!
  • fair priced By mcbridepcm on 11/23/2014

    I think it's a very reasonably priced media, I'm happy.
  • Great product By Travis on 11/18/2014

    What can you say about this GFO? It works and at a great price.
  • Outstanding quality GFO By KEM on 11/14/2014

    This is my second batch of GFO Granular Ferric Oxide from BRS. Fantastic results in removing Phosphates. Would recommend it to anyone wanting a good GFO product

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