Aquarium Electric Sponge Filter for Fish Tank

Sponge filter uses bubbles of air from an external air pump, or an integral water pump to draw water through the sponge. The sponge need to be rinsed about every 2 to 4 weeks. It’s helpful to wash the sponge gently with water from the fish tank instead of tap water. It is good to replace the sponge after 3 to 6 months’ usage as the holes of sponge is gradually clogged by the tiny debris. Aquarium Electric Sponge Filter This electric sponge filter with 10-layer ribbing shape sponge design, combines bio-filtration, oxygenation and physical filtration in one. With powerful motor, no need air pump; Just plug it in, it works 360° Rotatable Outlet.The water outlet can be out of the water or immersed in the water Comes with both sponge and ceramic balls Quiet operation