Easy-to-use 3-stage power filters for clean, clear aquarium water Reliable filter performance loaded with convenient features Provides efficient mechanical, chemical, and biological filtration Whisper Power Filters are the best-selling brand of power filters in the U.S. Appropriate for every size aquarium, they provide the three types of filtration that your aquarium needs: Biological, Mechanical, and Chemical. The unique feature of this power filter is its open Bio-Bag filter cartridge. This allows you to use the included Ultra-Activated carbon or choose additional media that best suits your aquarium's needs. Quiet and dependable filter incorporates superior 3-way filtration. Easy-to-use, Bio-Bag fiber quickly traps particulate matter, Ultra-Activated carbon removes dissolved contaminants, and Bio-Foam supplies plenty of surface area for optimal biological filtration. A specially designed reservoir prevents back siphoning in the event of a power failure. Flow control knob permits slower flow rates during feeding time to keep food out of your filter. Replacement Bio-Bags, and replacement parts available.Please click on "More Information" for aquarium sizes.

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