Nina_W wrote:
The short answer is no, not really. I've found the tetra whisper pumps to be the quietest air pumps, as quiet as most other high quality brands, like eheim. There are some things you can try to quieten them a bit, though.
The noise is mostly caused by vibration, so the noise reducing advice all has to do with lessening, or isolating, the vibrations.
Put it above the tank (if it isn't already), this has the pump working less hard, so it makes less noise.
Check your airstones/bubblers are clean and are not putting extra strain on your pump.
Put the pump itself on an absorbent mat. An old piece of carpet, a sponge, or a mouse pad, either one works, but with my pumps, different ones have had different levels of effectiveness. My last tetra whisper was on a carpet square on a mouse pad before I finally gave up on air pumps.
Try and put the pump (and whatever padding) on a solid surface. A stone counter top is truly the best, but obviously not always available.
I will agree with the tetra wisper air pump. Probably the most quiet pump I've used to date even without any type of pad under it to absorb vibration.