Cascade 300 Aquarium Filter - A Revolutionary Bio-Falls Quad-Filtration System! Plus the Polyfiber Floss Cartridge traps floating particulate matter. Activated Carbon Cartridge removes harmful chemicals, toxins, odors, discoloration and other contaminants.
Internal Sponge optimizes colonization of beneficial aerobic bacteria and removes ammonia and nitrites, and External Bio-Falls wet/dry biological booster for additional ammonia and nitrite removal and enhances oxygen exchange for maximum water oxygenation. Quiet and efficient motor with adjustable flow control.