ITEM NAME:Biochemical Sponge Fiter Cotton Aquarium Nano Fish Tank Pond Filter Foam Product Description Description: Biochemical Sponge Fiter Cotton Aquarium Nano Fish Tank Pond Filter Filtration Foam Description: Silent operation, and has an excellent filtering effect while oxygenating the water. The social developed foam materials supports the colonization of bacteria, allowing for mechanical filtration in addition to biological filtration, which will break down harmful waste, ammonia and nitrite material, resulting in a cleaner living environment for your fish, particular they are useful for as breeding filter or as secondary filter. Features: Provides biological filtration to the aquarium, helps to stable water quality. Increase the oxygen solubility. Working noiselessly. Good permeability, easy to clean. Adhere smooth surface with suction cup. With a airlift system, super biochemical sponge filter Specifications: Color: Black Material: Sponge Sponge Size: approx. 8.5x10cm/3.34x3.93in Suitable for fish tank: less than or equal to 220L Quantity: 1pc Fiter + 1pc Waterpipe Weight: approx. 260g Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Included: 1 x Biochemical Sponge Filter.Quantity: 1pc Fiter + 1pc Waterpipe. With a airlift system, super biochemical sponge filter. Included: 1 x Biochemical Sponge Filter. Material: Sponge. Sponge Size: approx. Suitable for fish tank: less than or equal to 220L.