Description This filter pad is made of premium material for durable and practical use. It can be used in sea water tank, fresh water tank,- plant tank. And its filter ability and high density design can stable water quality and reduce fish died. Great fish tank and aquarium filter cotton and give the fish fresh environment. Features - Color: Blue. - Material: Sponge cover. - Size: About 15x7.5x1cm/ 5.89x2.95x0.39 inch. - The use of environmentally friendly materials, super toughness and resistance to pressure. - High water permeable feature and filter effectively. -. Hand washable. No deformation. - Because the special design and material, cleaning is very convenient. - Great fish tank and aquarium filter cotton and give the fish fresh environment.- Color: Blue.- Size: 15X7.5CM. Package Including 3 x filter tool