I don't understand why my eyes are burning, both b4 and after a really hard, long rain that overfilled the pool. After rain test results are: FC 4.5, combined chlorine (calcium carbonate) 0, pH 7.6, TA 80, borate 50. didn't test CYA but it was about 90 about a week ago. As for salt level, the SWCG is happy. Water is clear and feels great!
Any ideas?
Any ideas?