Tested my pool water today and pool chemistry was: FC 5, PH 7.5, TA 80, CYA 70, CH 800., water temp 90. Pool water seems to look good. Was in the process of debating whether or not to add borates to 30-50 ppm to control ph drift due to SWG. My wife is concerned about health hazards. If I decide to proceed with adding borate I was going to increase to 30 ppm. Outdoor Pool is in direct sunlight almost all day.