BRS Bulk GFO Granular Ferric Oxide Size:4lb Most often if you catch

Most often if you catch a leak in the early stages

but there are a number of color variations depending on where in the lake they originate

as well as all vital micro nutrients are released by the capsules over a period of 1-2 months

sometimes with dark spots

BRS Bulk GFO Granular Ferric Oxide Size:4lb Most often if you catchPhosphates are going to be one of the biggest battles we have with a reef aquarium. The BRS GFO works great in filter socks and reactors. For the price Standard Granular GFO is going to be one of the best values when it comes to GFO for phosphate removal. Granular Ferric Oxide (GFO) removes phosphate from the aquarium and is one of the most commonly used filtration media used in the aquarium industry. GFO is one of the few ways to easily maintain