Phosphate Adsorption Media PhosBan is synthetic ferric oxide hydroxide in a granular form ideally suited for use in aquarium filters. PhosBan - This is an effective formula of ferric oxide hydroxide granules that remove phosphate and dissolved organics from water. PhosBan remains active for several months in typical aquariums and does not release anything back into the water, even when fully saturated. 150g treats up to 1200 litre of freshwater and 600 litre of marine.
