Specifications Activated carbon filter sponge makes superior powder activated carbon as its adsorption material, using macromolecule binding material to attach to the fiber matrix. It has good adsorption of impurities, furthermore, there are also filtering effect of sterilization, deodorization and odor removal. 1. Can be cut according to the required size. 2. Through the sponge, it can filtrate excrements of the fish and feed residue, to improve the water quality and reduce the incidence of fish. 3. Can be cleaned according to the speed of water permeablility, can be used repeatedly after scrubbing. 1)Qty/carton:50pcs 2)carton size(cm):69x50x51 3)GW(kg):14.8 4)NW(kg):14.3 5)meterial: sponge 6)item size:100x30x0.6