Aquarium Filter Floss 12 * 144 Inches, Cut to Fit Fish Tank Filter, Dual Density Aquarium Filter Pad, Pond Filter Media Roll Clear Water for Freshwater & Saltwater, Safe for Fish, Reef, TurtlesSay bye to Messy Aquarium: This filter floss for fish tank is used in aquarium filtration system. The aquarium filter media can effectively remove impurities and waste in the fish tank, keep the water clear and transparent, and provide a clean and healthy living environment for aquarium pets. The use of aquarium filter floss can reduce changes in water quality, prolong the service life of the filter system, and keep the fish tank clean and sanitary