This product is a professional and efficient fish tank filter plate, which is made of safe and gentle sponge cover, gentle and practical, and will bring you a good experience. With reasonable design and practical functions, it can be used in seawater tanks, fresh water tanks, and aquatic plant tanks. Its powerful filtering capacity and high-density design can stabilize water quality and reduce fish deaths. This is a very practical and excellent filter tool that can provide a better environment for your fish tank. Features -Color: Blue. -Material: Sponge Cover. -Size: About 15.00X7.50X1.00cm/5.89X2.95X0.39inch. -Made of sponge cover, safe and gentle, comfortable and durable. -High water permeability, can effectively filter, provide comfortable environment for your fish tank. -It has good process details, is safe and durable, easy to clean, and supports your repeated use. -Large fish tanks and aquarium filter cotton provide a fresh environment for fish. -It is easy to replace and contains enough quantity to meet your needs. Package list: 10 x filter tools