I have an older 17,000 gal inground plaster pool in Arizona, lots of sun. I almost always use liquid chlorine.
Using a Taylor Kit
FC 2.6
CC 0.2
PH 7.4
TA 125
CH 700
CYA <30
Ph was 8.0 a few hours ago. Used Clorox ph Down. I think these levels are ok now, I will add a gallon of chlorine...