
I got the Avast ATO pump today. Other than being loud, it's great, with plenty of pumping power. Avast described it as being about as loud as an air pump. That was being kind. I lined a small box (actually, the box it was shipped in) with packing foam and put the pump in it. That did the trick. All you can hear now is a slight gurgle from the hose when it's pumping and you cant hear that with the cabinet doors closed

I also wired it directly into my Tunze ATO, so it should work with any system that uses a 12v pump.
AVAST Marine Works - ATO Diaphragm Pump - Product Details
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