Tetra Whisper 4 Gallon Internal Power Filter, Filtration for 4 Gallon Aquariums
UNIVERSAL DESIGN: Tetra Whisper 40i Internal Filter is an all-in-one air pump and water filter system.
INTERNAL FILTER: Mounts on the inside of your aquarium with clip (included).
CATCHES DEBRIS: Dense, dual-sided mesh filters debris and fish waste.
AERATES WATER: Air-driven design filters up to 170 GPH while oxygenating water.
CONVENIENT DESIGN: Uses large easy to change Bio-Bag cartridges; filter mounts inside aquarium, making it possible to place tank flush against the wall.
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