Tetra Whisper In-Tank Power Filter provide the ultimate in convenience and quiet. These filters mount on the inside of the aquarium, rather than hanging from the outside -- making it possible to place the tank flush against a wall.
In-Tank Filters are unusually quiet, since the motor is under the water. Offering the same quality and performance as an external filter, the Whisper In-Tank Filter will function in as little as 2 inches of water -- making it ideal for turtle tanks, or for creating a waterfall inside the tank.
The Whisper In-Tank filter features adjusts easily to high or low water levels with mounting suction cups and/or bracket. Each filter comes with one pre-assembled Whisper Bio-Bag filter cartridge.
In-Tank 10i - Up to 10 Gal, 90 GPH. Uses Medium Bio-Bag Measures 4.2 x 4 x 8 inches
In-Tank 20i - 10 to 20 Gal, 125 GPH. Uses Large Bio-Bag Measures 4.9 x 5.4 x 10.2 inches
In-Tank 40i - 20 to 40 Gal, 170 GPH. Uses Large Bio-Bag Measures 5.1 x 5.9 x 10.5 inches