Just a guess, but there might be a problem with the filtration/circulation. Your numbers do not indicate cloudiness from the TA/CH/pH combo. Carl is right that adding either calcium to your pool (as with Cal-Hypo) or adding soda ash (sodium carbonate) to raise pH will often cloud the pool, but normally this goes away relatively quickly, especially in your situation with your pool water balance.

If you've got suspended particles causing the cloudy water, then your filter should normally clear that out which is why I brought up your checking your sand filter to make sure it's operating properly. I don't have a sand filter so don't know how to see if it's working correctly, needs backwashing, etc. so others will have to help on that front.

Richard