Thank you all very much this all is very helpful. Seems I may have been a little overly concerned but better safe than sorry. Thanks!
They are great pumps. Only got rid of mine to go with something bigger. I would second the vibration point, but other than that, flawless operation.
I put a piece of filter pad under my danners. It absorbs the vibration and noise. I have one running in my bedroom and it's quite enough to sleep with.I would second the vibration point, but other than that, flawless operation.