I'm on day 10 of balancing my pool chemistry, and so far, so good. On the second or third day my wife and I had a little bit of red, stinging eyes which seems to be gone now. At that time, my pH was about 7.2 (now 7.5), TA was about 50 (now 120), and FC was all over the place between 1 and 10 (probably will start to stabilize now that I've brought the CYA up from 0 to 30). Also, CH has come up from 25 to 150 and will be more tomorrow as I added another dose of calcium chloride today. CC was 0.5 on the first day and has been 0 ever since.
What is the most likely culprit that causes eye problems? Low pH? High FC? Low TA or CH? Something else? I'd like to be able to tell my wife what I did right so she continues to keep thinking that I know what I'm doing!