Feature
1. Can be used to freshwater, saltwater, aquatic plant aquarium and ponds. Cut freely the size you want and can be placed in the upper, canister, drip flow filters and submerged filters.
2. It has the best effect to decompose the excrement and feed residue.
3. Filter sewage to improve water quality and reduce fish mortality.
4. The material of fine hole and softness is the best filter sponge to cultivate fine nitrifying bacteria.