I noticed earlier today that no water was moving through the skimmer basket and the PSI, which is normally 10, is 0. So I turned the pump off to go to work and I'm back home trying to trouble shoot in the waning daylight. I turned the handle to "backwash" and got much less flow than usual, the same with "waste" and "rinse." I took a garden hose that has very good water pressure with city water and directed flow down the poolside skimmer hole. I did this at first with the pump basket open and later tried with the basket closed and the pump on. The result is that the pump basket fill with water. I removed the pump basket with the pump off and felt what I thought is the impeller and it felt clear and turned for me. Could it be something with the DE filter? For what it's worth, the water in the pump basket looks cloudy like there may be DE in it. My spouse and I cleaned the DE filter in July and recharged it with DE. The PSI has been reading at 10 every day since then. I have not backwashed since that cleaning, but the PSI has not risen either.