My pool is 25,000 g. My most recent reads (from yesterday) are as follows:
FAC 3
TAC 3
CH 210
CYA 100 (High)
TA 110
pH 7.4
Phosphates 1000 (High)
Today my FAC is 0. I cannot get the free chlorine to stick.
2-3 weeks ago, when I realized CYA was high, I stopped using tabs and...