aquarium filter sponge Factory directly sell,low price,good quality, size,packing ,colour can according to your request. aquarium filter sponge1) Material: sponge(PU).It have 10ppi,15ppi,20ppi,25ppi,30ppi,etc.2) Usage:used to filtering or clean dinnerware,tableware,house items,etc.3) Packing:one pc/opp bag,300pcs/ctn,or according to customers request.4) Size:14x10X5cm,all can follow customers ...