I did the overnight test and early evening, my FC was 11 and at 5:30 a.m, it was still 11. This afternoon, it was 5.
I have been adding at least 2 jugs of bleach every night and have seen a pretty consistent pattern of about a 5 ppm loss. I was wondering if I was loosing any overnight so I forced myself to get out of bed to check. I did not loose any. My pool gets full sun all day with no shade. We've been running between 95-100 temp and the pool water is almost too warm! Is it normal to loose this much cl to the sun?
MY CYA is 80 and I'm working to bring it down.