Double Black/Clear Bio Sponge Filter (XY-2822) is an ideal filter for keeping Shrimp, raising young fish and for quarantine and hospital tanks. For use with an air pump (not included, we recommend a Betta AP-3500). This filter comes with suction cups for mounting on the aquarium glass. Recommended for aquariums up to 200L. This super biochemical sponge filter is a filter that keeps your aquarium clean. The filter sponge provides mechanical and biological filtration for easy aquarium maintenance. 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. As a biological filter, harmful wastes are biologically transformed into a relatively harmless substance by aerobic bacteria that accumulates in the sponge. Suitable for Small aquariums with tropical or cold-water fish. Shrimp and Betta aquariums. Fish breeding tanks. Fry raising and growing-on tanks. Quarantine and hospital tanks. Specifications 5cm tall and can extend to 35.5cm. 5cm long x 6cm wide. Sponge size 4.8cm diameter x 12cm high. Contains 1 sponge. Colour: Black and Clear.