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Biological filter media enhances the elimination of fish wastes
Large surface area provides optimal colonization of beneficial bacteria
Helps create crystal clear, sparkling aquarium water for healthier aquarium environment
Suitable for both freshwater and saltwater aquariums
Fluval BioMax provides an optimal environment for beneficial bacteria growth. The bio rings have a complex pore system creating an optimal environment where beneficial bacteria can thrive. It also reduces and controls ammonia and nitrate. Fluval BioMax is for freshwater and marine environments, and fits the U series filter models: U2,U3 and U4.