Second Nature Whisper Power Filter, featuring the WonderTube, Magnetic-Impeller and Novel Overflow Diverter. Powerful enough for a 30 gallon tank. Easy to use, clean and maintain. Filter gently used, cleaned, in good working condition, and comes in original box with instruction booklet. Free bonus items (not pictured) included with this purchase: 5 Aerobic filter frames, 1 Bio Bag filter bag, 3 packets of Tetra Ultra-Activated carbon. Frames, bags and carbon packets all new and unused, clean. MPN: 25002.