Tetra Whisper Internal Aquarium Filter, 200 GPH for 75.7–151 L Tanks

The Tetra Whisper 200 GPH Internal Power Aquarium Filter is made for 20- to 40-gallon aquariums (76–151 L), combining three-stage filtration with a space-saving design that clips inside the tank.

• Filters up to 200 gallons per hour (757 L/h) — circulates aquarium water through the filter.
• Mechanical, chemical and biological filtration — addresses debris, odor and discoloration, and ammonia and nitrate.
• Stay Clean technology — helps reduce glass buildup, bind small particles for easier filtering and stabilize pH.
• Internal clip-on design — lets an aquarium sit as close as 1 inch (2.54 cm) from the wall.
• Adjustable universal clip — accommodates setups with high or low water levels.

For fishkeepers who want filtration housed inside the aquarium, this filter combines water cleaning with a compact placement option. Its cartridge-based design and adjustable clip suit a range of aquarium setups, while the filter can be concealed behind aquarium décor.

How does the Tetra Whisper filter clean aquarium water?

It uses mechanical, chemical and biological filtration. Cartridge floss traps dirt, debris and fish waste, while Ultra-Activated carbon helps remove odors and discoloration. Biological filtration works to eliminate toxic ammonia and nitrate.

• The large Tetra Whisper Bio-Bag cartridge is easy to change.
• The carbon is wood-based; Tetra says it clears odors, tannins and dye more effectively than coconut shell-based filters.
• The feature specification calls the motor 170 GPH (643 L/h); the product description gives a filtration rate of up to 200 GPH.

How much space does this internal aquarium filter need?

The filter clips directly onto the aquarium wall, and its compact design allows the aquarium to sit as close as 1 inch (2.54 cm) from the wall. Aquarium décor can help hide the filter inside the tank, keeping the equipment out of view.

• The filter is designed for 20- to 40-gallon aquariums (76–151 L).
• Its adjustable universal clip suits different setups and high or low water levels.

What does Stay Clean technology do?

Stay Clean technology helps reduce buildup on aquarium glass, binds small particles so they are easier to filter and helps stabilize pH. These functions work alongside the filter’s three filtration stages to support a clean environment for fish.

• Quiet operation is a feature of Tetra filters.
• Filtration is housed inside the aquarium rather than in an external filter unit.

The Tetra Whisper Internal Power Aquarium Filter is suited to fishkeepers with a 20- to 40-gallon aquarium who want quiet, internal filtration, adjustable positioning and a replaceable Bio-Bag cartridge. Its clip-on format keeps the filter inside the tank while allowing the aquarium to sit close to a wall.