Description This item is a fish tank filter cotton, made of premium material, very sturdy and durable to use. This product is suitable for many occasions, the size is fit for most fish tanks. Suitable for fish tank and aquarium, and bring much convenience to you. Features -Color:Black -Material: Filter cotton -Size: About40.00X30.00X2.00cm or 15.72X11.79X0.79inch- Fine material and highly efficient filtration of impurities in water.- Purify your fish tank with this high density filter pad, a nice helper for you.- High-quality material does not pollute water and can keep water clean, no deformation, free cutting, good softness.- The filter pad has plenty of surface area to create superior biological filtration.- Effective to avoid residue and reduce the death rate of fish and chemical filtration and increase the oxygen solubility in aquarium and fish tank. Packing list: 1 x fish tank filter cotton