Tetra Whisper Air Pump for Aquariums Up to 100 Gallons

The Tetra Whisper Air Pump is a plug-in pump that pushes air through tubing to air stones, sponge filters or bubbling decorations. This is the 60 to 100 gallon size in the Whisper line, and like the 60 gallon model it has two air outlets. That lets you run two devices from one pump, or split air between two spots in a big tank.

Picking the right Whisper size

Tetra sells the Whisper in several sizes. The 10, 20 and 40 gallon pumps have a single outlet, and the 60 and 100 gallon pumps have two. If your tank is under 60 gallons, a smaller model is a better match for the air it needs. This one is for big tanks, or for running two sponge filters at once in a mid-size setup.

Keeping it quiet

Tetra uses a dome-shaped case with the motor suspended inside and sound-dampening chambers around it. That cuts down on the buzz that air pumps are known for. Where you put the pump still matters a lot. Set it on a soft pad or a towel rather than a hard shelf, and keep it from touching the tank or stand, since hard surfaces amplify vibration.

Setup tips

• Add a check valve. If the power goes out, water can siphon back down the tubing. A check valve on each line stops that, or you can mount the pump above the water line.
• Use a control valve with two lines. Two devices rarely pull the same amount of air. A gang valve lets you balance them.
• Check tubing and stones. Clogged air stones cut output, so rinse or replace them every few months.

An air stone kit or a sponge filter pairs well with it.

Things to know before you buy

This version is not UL listed. Tetra positions it as an economical option, so if your building or insurer asks for UL-listed equipment, check before you order. For a nano tank or a bedroom where any hum bothers you, a smaller, quieter pump is the better match.