Efficient medium for fluidization filters. Too much food and supplements may be the cause of too high phosphate levels. Due to the unique technology Phosphate Minus effectively reduces phosphate and silicate levels in marine aquariums. Its adsorbing capabilities allow bonding large amounts of phosphate without negative influence on the aquarium inhabitants. Phosphate Minus is highly recommended both in new and in matured aquariums. In freshly set aquariums it prevents occurring high phosphate levels and in matured aquariums it reduces PO4 levels and stabilizes water chemistry. Due to maintaining the biological balance in the tank, it prevents the formation of undesirable green algae and the development of cyanobacteria.