
PVA biochemical sponge
This is a good material for biochemical filter. This material is flexible and not easily damaged, its pore size is suitable, which make it have stronger physical filtration ability. At the same time, it provides an excellent living environment for nitrifying bacteria with lots of pores distributed on the sponge surface, it is ideal for various ornamental aquariums.
It can be widely used in large-scale sewage treatment facilities to improve water quality purification efficiency.