I'm having an issue where my filter seems to be taking forever to clear my pool after my pool pump broke and was out of commission for about a week. During that time, the pool turned pretty green. I've been backwashing, shocking and brushing daily and while it seems to be getting better its getting better very slowly. I've noticed something strange going on however.
I have the return jets all pointed to my hot tub so water coming from the filter all goes into the hot tub and then escapes into the pool through a small rectangular "break" in the wall that separates the hot tub and pool. I had my wife do the backwash procedure while I watched the hot tub.
During the backwash all looked well in the hot tub. My wife would report that the sight glass on the multiport valve (sand filter) is getting cloudy. I looked at the hot tub and saw no change. As soon as my wife started to say that the sight glass was getting clear i began to see cloudy water seeping into the hot tub from the returns. We then put the multiport on rinse and also saw a bit less cloudy water entered. We then finished the backwash/rinse procedure and put it back to the filter setting. By that time it was difficult to say but it seemed like the cloudy water filled the rest of the hot tub and also into the pool.
What do I have going on here? Do I have something jacked up in my multiport valve? I'm assuming no water should go back into the pool during back washing no? My pool is getting clearer but its going so slowly that something seems wrong.