Originally Posted by SudhirR
Hang the air pump by the air line or some other means. Or get a quieter version.
I use an air pump thatís actually used in baby brine shrimp hatching system and thatís super quiet but not very powerful.
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I silenced my air pump by hanging it with a fish line so it touches nothing. I hang it above the tank to prevent siphoning, and if you canít do it, make sure you install a check valve. Donít underestimate the tiny air hose which can drain your tank if siphoning is undiscovered over night. Self siphoning can be triggered by Venturi effect in power outage or a hose slip off a gang valve.