... disposal factory,tap water factory, cooling tower, swiming pool, fish pomd, collecting fish eggs,ect.Features:1) Biological filter mat removes toxic ... .25mm) and water resistant binderUsage : a,Koi pond b,Garden pond c,Aquarium tank D,Fish farmSpecifications:1) Materials: curled fibers monofilament (diameter ... Warehouse Our Certificate Lowest price of Janpanese Filter Mat for fish pond with ISO9001