I purchased a Quiet One 9000 pump and discovered that the word quiet does not really apply to this pump. This pump is going back and need to either replace it with the same pump (hoping I got a bad one) or a different pump altogether. Does anyone elase have a QO 9000 that is actually quiet? Is there another single pump or 2 pumps that I could replace this pump with and still get the 2000gph that I am looking for? I need to decide this by tonight and I really want a quiet pump.