herbie and basement sump

[MarkoD]

Originally Posted by mark

you say can't get overflow silent, but where's the noise? Is it gurgling in the line below the gate valve?

With mine I placed the gate just above the sump so the drain is full of water and area around the tank is silent.

yes its gurgling right below the gate valve. but i sounds like really fine bubbles

and there seems to be a click/knocking sound once in a while.