Made of food grade material, eco-friendly bio filter sponge and works great without noise With the air pump as the power source, combined with mechanical filtration, the sponge can absorb fine particles to achieve the effect of purifying water. Double head filter holder is easy for nitrifying bacteria to form and grow, can help purify water quality. Three powerful powerful suction cups, effectively prevent the pump from slipping, more stable. It has the function of pumping water and increasing oxygen and fully filtering the dirt residue in the water.
