(Ship from CA USA) Aquapapa 4x Bio Sponge Filter for Betta Fry Aquarium Fish Tank[Product Information]- Provide both mechanical and biological filtration.
- Simply install an airline into the unit and provide both aeration and filtration for your fish. Aerobic bacteria colonize the sponge providing a bacterial substance to facilitate the nitrogen cycle.
- The sponge traps larger waste particles mechanically cleaning the water without trapping baby fish.
- Product dimensions: 3.8”L x 1.8”W x 5.5”H; sponge dimensions: 1.8”D x 3.0”H. They are useful for as breeding filter or as secondary filter. Or they can be used as pre-filtration unit by fitting to an external or a top filter.
