Have had this year cloudy water that I can't figure out. Cleaned cartridge filters which are almost new and Slammed pool with no noticeable improvement. Today pool shows Chlorine at 5 PPM with salt cell (has never been too low), PH 7.6, Alkalinity 75, Calcium 650, Cyuric Acid 75 PPM, Borates 40, temp 92. Per pool math calculator CSI at .37. I know Calcium is high but have had clear water at these levels in the past. Water is 3 1/2 years old, pump runs 6 hours @ 2100 RPM, 4 hours @ 1200 RPM. Any suggestions anyone???