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Aquarium Industry News & Education

GFO - Grandular Feric Oxide - Do I Need It?

GFO - Grandular Feric Oxide - Do I Need It?

High phosphate levels are a recipe for disaster in saltwater aquariums. It is a nutrient for nuisance algae and also hampers the formation of calcium skeleton in corals. There are several different methods for dealing with phosphate levels but one they I like is using granulated ferric oxide (or GFO) in a media reactor. GFO is best used with a media reactor for several reasons. First, it is a very fine media and would easily escape from any bag you put it in.Second, it clumps toget …
Jun 26, 2019 Ben Johnson