Sponge filters 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. In addition, the sponge traps large...

Sponge filters 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. In addition, the sponge traps large...

Aerobic bacteria in the sponge reduce the ammonia, nitrites, and surface deposits in the tank. Promotes better oxygenation while creating a wave effect for moving plants or anemones. Includes an assortment of adapters to fit the output tube of most pumps and filters.