With my pool uncovered without the solar cover I am losing 6.0 - 6.5 ppm of chlorine. I did the the OCLT last night and this morning and passed. I had my cya at 40 from my testing. I took a sample to Leslie’s a few days ago and they tested it at 33. I also took it to a small pool shop and they tested it as 40 with the sliding instrument. Two weeks ago I had a bit of cloudiness and I did a quick slam. The water has been crystal clear. But since then the temperatures have increased into the upper 80’s. Getting UV index of 8-10 for a few hours in the afternoon. The pool gets no shade at all. Water temp is approaching the mid 80’s. But I have to add LC twice in the afternoon because I’m afraid of getting too close to the bottom of my range. I added 9.6 of cya (sock method) yesterday to see I can bump to 50. I immediately bumped my FC to 8 in case I did. I will retest CYA today. I’m using fresh 12.5 LC dated 20131. I wish I could just test and treat once a day, but I can’t so far since it has warmed up the last two weeks.