Last weekend I had to open the pump and clean it out of all the pine needles. They were wrapped around the motor like a string on a vacuum! After cleaning it, it purred like a kitten! The circulation was better than I'd ever seen it and the new filter gauge was actually working! Everything was working like a champ! Then today, the psi had risen to 10 (due to all the unbelievable amount of pollen coming from the pine trees almost directly over my pool!) so this evening I backwashed. Now, the pump basket is only half full of water, the filter gauge is back to reading "0" and there is very little, if any, circulation in the pool! Only 1 of the returns is actually "returning". I backwashed a couple of weeks ago just to get all the construction junk out and did not have this problem. What the heck has happened??
Thanks for your help!