Pool water has been cloudy about 2 weeks now. I drained about 1/3 - 1/2 of the water to "start over" after nothing worked. I cleaned/vacuumed it prior to draining. The chemical levels are all back to normal now (per 3 different tests), cartridge filter is being cleaned daily, pump is running, I stir it up and get in and use the net. I tried the SuperBlue clarifier. So far nothing has worked, still cloudy. This is the 1st year this has has happened. Any suggestions would be helpful. Thanks.