color sponge,Aquarium filter,filter sponge,

Aquarium filter /bio-filter/color sponge/filter sponge The polyurethane foam filter has different mesh,with high resilient ,many colors and good air pemeability. It is durable in water and low cost. wildly use in filter industrial and cleaning, This kind of sponge filter use super filter sponge as filter material,if use with air pump, it can not only clean the water but also add oxygen into the water.