I've just gotten the return pump started on my new system. The return pump is connected to the hard plumbing with a piece of vinyl tubing, because that's what I was able to easily get a hold of. It's quiet, but there's still a noticeable hum from the sump due to the pump vibration.
Does silicone tubing do a better job of dampening vibration than vinyl?
Does silicone tubing do a better job of dampening vibration than vinyl?