I seem to struggle with CYA, opened pool 3 weeks ago and added stabilizer to get to 50ppm, test showing 30-40, pool is clear and otherwise numbers look good, we have had a lot of rain lately.
FC 2.5, CC 0, TC 2.5
PH 7.8
TA 90
CH 30 - never have a straight answer if I need to have a high CH...