I have fine silt and pollen collecting mostly along the seams of my liner. I have passed the overnight FC test. When I add a little DE my PSI will jump up by 10 in about an hour. When I turn the pump on I notice sand shooting out the returns for a couple seconds.
If I take the filter apart what am I looking for? What are some reasons my filter is not filtering?
It was working fine last year before I had a o-ring replaced. Its four years old and a hayward 200s
sand filter. Thanks for any advice