yes, been rinsing for a few seconds after each backwash. I had a bit of mud in the water as the pool was just built this past fall and some dirt got pushed into the pool during the backfill. I spent about a week vacuuming as much as I could out of the water, but i have a feeling that there is still a bit left and this might be causing the bulk of my problems. everytime I think i've gotten it all out, i end up running the vacuum and realize how much more has settled.