Aquarium Sponge Filter (PK200) Standard is an ideal filter for keeping Shrimp, raising young fish and for quarantine and hospital tanks.\n\nFor use with an air pump (not included, we recommend a Betta AP-3500).\n\nThis filter is free standing and comes with weighted base. Recommended for aquariums up to 200L.\n\n--This super biochemical sponge filter is a filter that keeps your aquarium clean.\n\n--The filter sponge provides mechanical and biological filtration for easy aquarium maintenance.\n\n--As a mechanical filter, it uses the air-driven system to create suction, that allows the sponge to capture floating particles in the water and return filtered water to the aquarium.\n\n--As a biological filter, harmful wastes are biologically transformed into a relatively harmless substance by aerobic bacteria that accumulates in the sponge.\n\nSuitable for\n\n--Small aquariums with tropical or cold-water fish.\n\n--Shrimp and Betta aquariums.\n\n--Fish breeding tanks.\n\n--Fry raising and g.