If you have no combined chlorine, and your chlorine holds overnight, you can bring your chlorine back down to 8. When I had the white powdery substance I flocked my pool (I know a lot of people on this board don't like to use flock, but it worked great for me). I put in the amount it said on the bottle, let the filter run till it was all circulated. Then I turned off the filter over night. The next day there was a lot of stuff on the bottom of the pool which I vacuumed to waste. It was still cloudy - but not as cloudy, so I turned the filter off and let it stand for the rest of the day and overnight. I vacuumed to waste again, and did this until the pool was clear. If you want to do this I would do it while the chlorine is high. Since all of your numbers are good, and you don't have any combined chlorine, it seems that there is something small in your water that isn't filtering out. If you have a sand filter you can try putting a lb of DE in the skimmer to coat the top of the sand first. If you use this method, you have to add DE everytime you backwash. It's your choice, if you don't want to put flock in your pool, you can try the DE, but the DE method will probably take longer. Good luck, and keep us informed.