API Crystal Bio-Chem Zorb Cartridges provide mechanical and chemical filtration for your SUPERCLEAN 5-20 power filter. The mechanical filter cartridge helps remove waste and debris, while the Bio-Chem Zorb removes dissolved organics, odor and discoloration. A unique carbon-resin mix, Bio Chem-Zorb removes more from your aquarium water than standard carbon and can last up to six months longer.
Rinse pouch under tap water to remove loose dust. Pouch does not need to rinse clear. Place pouch in the path of water flow in the aquarium filter. Replace every month or as recommended on the packaging.