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Outside filter for freshwater and marine aquaria designed for easy maintenance and efficiency. Patented wonder tube intake slides out for cleaning—no disassembly of filter involved. Flow control knob allows slow flow at feeding time. High-impact filter tank resists breakage. Removable energizer power unit is encased and safely air-spaced to eliminate shock hazard and avoids melt-down if filter runs dry. The Whisper® Bio-Bag Disposable Filter Cartridge increases filtration surface area by 200%.
