Tetra/second Nature Whisper Economy Power Filter 20

Three-Way Filtration: Mechanical, Chemical, and Biological Quiet, self-starting filter delivers quiet and dependable three-way filtration. Bio-Bag Cartridge filters out harmful debris and chemicals while providing the perfect environment for the growth of beneficial aerobic bacteria. Mechanical Filtration The Bio-Bag Filter Cartridge is made of a thick, high quality floss which traps debris. Chemical Filtration The Bio-Bag is filled with Ultra-activated Carbon which removes dissolved contaminants, noxious odors and discoloration, as well as hundreds of other chemicals such as chlorine, insecticides, and detergents. Biological Filtration Aerobic biological filtration converts toxic ammonia and nitrates into harmless nitrates. Easy to maintain, never needs oiling. Includes free Bio-Bag. 115 volts, 60Hz. UL listed.