Planted Tank Obsessed
Join Date: Apr 2012
Location: Los Angeles, CA
Give it time. Mine rattled pretty bad when it was new, but after a couple months it's almost silent. Need to give the impeller time to grow some gunk around it to act as a lubricant. You can try using vasoline, especially on the shaft, but I've found this to be hit and miss on the AC filters.
Last edited by somewhatshocked; 04-02-2013 at 01:28 PM.