Air Driven Sponge Filter For Aquarium Fish Tank Bio Foam Breeding High quality aquarium sponge filters Aerobic bacteria colonise the sponge providing a bacterial surface to facilitate the nitrogen cycle. In addition, the sponge traps larger waste particles and mechanically cleans the water without trapping baby fish. They are useful as a breeding filter or as a secondary filter in the aquarium. These sponge filters can also be used as pre filter to an external filter inlet pipe. The large sponge filter measures 12cm Diameter x 11.3cm Tall. It is suitable for aquariums up to 20 gallons. A suitable air pump with air line must be used to run these filters (not supplied, but are available separately in our store).
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