The unique fresh and saltwater filter medium. Can be cut to fit any type & size of filter Changes colour to indicate the type of materials removed Guaranteed to remove copper based medications from seawater Totally dependable - will not release impurities back into the water Poly-Filter removes nitrogenous compounds such as ammonia, nitrite, nitrate; medication such as copper, antibiotics; plus other pollutants such as phosphates, proteins, toxic metals, phenols and insecticides. The PolyFilter is a unique invention for chemically filtering and purifying both fresh and salt water aquaria. PolyFilter is a formation of a special patented material bounded to a synthetic matrix, which absorb and adsorb contaminants and other toxic materials which are found in nature or which are added to fresh and salt water. Full installation and operating instructions included. Works in Power Filters, Undergravel Filters and Canister Type Filters. Will NOT soften water or remove trace minerals. Available in 3 sizes: Standard - 20cm x 10cm (8" x 4") Breeder - 30cm x 30cm (12" x 12") Discs - 7cm diameter (2.5")
