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Penn-Plax Hang on Power Filter. Quad filtration system: Mechanical- Polyfiber Floss Cartridge, traps floating particulate matter. Chemical- Activated Carbon Cartridge, removes harmful chemicals, toxins, odors, discoloration and other contaminants. Internal shelf system spaces carbon throughout cartridge. Prevents teabagging. Biological- Internal Sponge,optimizes colonization of benefical aerobic bacteria. Removes ammonia and nitrites. Biological-External Bio-Falls, wet/dry biological booster for additional ammonia and nitrite removal. Enhances oxygen exchange for maximum water oxygentation. Other features include: 185 Gallons/hour, up to a 55 gallon tank. Adjustable flow control, Motor-quiet, efficient and maintenance free, Extendable lift tube for maximum depth of tank, Leveling device-keeps filter positioned and stable in most aquariums, Easy disposable replacement cartridge-free cartridge included. Replacement cartridges sold in single and triple packs for your convenience. Also available in four other sizes.
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