Quote Originally Posted by JohnT View Post
Not knowing your filter model I can't be sure, but 4lbs is on the light side for a DE charge.
My filter is a PacFab Star DE-ST50 model. Is doesn't backwash. It just "bumps and swishes". Last year we had no problems with it. I'm wondering if the problem is with the filter or the pump now? What would cause the water in the skimmer to not be pushing through very fast. Last year, the skimmer door was flattened by the water rushing in. This year, the door stands up and free-floats which means there is no suction. GRRRRR!