quieting vibration in sump from external pump

[hipertec]

I just added an external Gen X 55 pump and Im getting a vibration from the sump. It seems to be coming from the side that the pump is connected to.
I have about 3" of flex tubing connecting the two and there is annoying vibration sound.
I have put styophone under the sump.

Any suggestions?

 

[marcrothschild]

Silicone tubing on both the intake and output will help to isolate vibrations. Spaflex and rigid PVC make the sump hum. Also try a dense carpet padding instead of the styrofoam.

 

[hipertec]

silicone tubing...is this the regular vynal tubing? would this work to connect to the sump? Where can I get 1" ones?
also dense carpet padding,,,thats the stuff they use under the carpet right? Wont that get all moldy after years?

 

[marcrothschild]

Actually, I meant vynal tubing, but high quality vinyl tubing has a high percentage of silicone in it for softness/flexibility. A good LFS should have high quality tubing in 1". As far as the foam, that area shoul be dry, but a dense foam will not absorb lots of water....and it is cheap to replace if needed. Just buy a length and save some