Okay, I'm fully converted to LC; no more tabs... but wow this is getting expensive. My current stats are:
20,000 in ground, plaster pool, 3 years old.
PH 7.5
FC 2.5 to 7 (this is my question, details coming below)
TA 130
CYA 140 (yes I know this is horrible but I cant drain and refill yet. I...