Hi I have a 15x30 above ground, hayward pump and sand filter.
The question I have is I started the pump last night and it runs at zero psi for the most part. However, every 7-10 minutes the pressure builds to about 7-10 psi and the water in the pump and return picks up but it only last for 25-30 seconds. Then it goes back to zero and I still have water in the pump and return just not as strong. Could this be a pump problem? I replaced the pressure gauge last year.