So for whatever reason I am only reading 1 psi on my filter gauge. I replaced the gauge because I thought it was defective. Still reading 1 psi on the gauge. I have flow from the drain and the skimmer and flow to the return jets. I have noticed that it is not that strong. I have a pentair 2hp pump and pentair DE filter. Not sure what the issue it. Nothing that I know of has entered the piping and I have not backwashed since I opened the pool on May 1st. My only thought is that something is going on with the pentair multiport valve. Also I noticed that when I vacuum I can pull the hose out of the skimmer when the pump is running. I was never able to do that in the past. Any ideas?