Quote Originally Posted by Txboynjgirl View Post
My sand filter is making a noise...leaning in it comes from the water going back through the return pipe to the pool. the noise sounds like water is having a hard going through...not a good flow sound. What would cause this??????
The most common cause of noise in a filter or valve is water and air mixed together. That, in turn, usually means there's a small suction leak in your system (before the pump, or at the pump strainer). It can be a problem in the skimmer, a leak where the piping enters the pump, a valve, the pump strainer lid . . . or something else. Usually, you'll can look in the pump's strainer pot, and see a mixture of air and water there.