I am using a Whisper 60 air pump and according to what the company says these are supposed to be very quite. Mine makes a loud humming noise all the time. Is there anything I can do make it more quite? I purchased an aquarium check valve and was thinking about using that with some longer air line tubing and moving it to the floor in the hopes that it would be quiter on the carpet. Does that sound like it might work or does anyone else have any other suggestions? Thanks in advance for any help, this sound is getting really annoying.