The Penn-Plax Cascade Power Filter contains a polyfiber floss cartridge that traps floating particulate matter. Activated carbon cartridge removes harmful chemicals, toxins, odors, discoloration and other contaminants. Extendable self-priming intake tube to get strainer near the bottom of most aquariums Adjustable flow control knob for reducing filtration during feeding times Internal shelf system spaces carbon throughout cartridge Internal sponge optimizes colonization of beneficial aerobic bacteria. Removes ammonia and nitrites. External bio-falls wet/dry biological booster for additional ammonia and nitrite removal. Hang on back HOB power filter for easy installation. UL-listed for safety. 3-year warranty.Specifications:Cascade 80: 80 GPH (10 Gallon Aquariums)Cascade 100: 100 GPH (20 Gallon Aquariums)Cascade 150: 150 GPH (35 Gallon Aquariums)Cascade 200: 185 GPH (50 Gallon Aquariums)Cascade 300: 300 GPH (100 Gallon Aquariums)Note: All models except Cascade 80 (Model #CPF1) include top.
