Dad's new pool has one of the h series Hayward's. Not sure yet which one, but assume they all require the same water chemistry.
From their guide, Hayward recommends-
Chlorine- 1-3 ppm
ALK- 80-100 for sodium hypochlorite
PH and ALK I understand, and I'm currently working to get the ALK down to 80 (started at 240 from high fill water, down to 140 today), and when I hit my targets we plan to add borates for stability, algae prevention, clarity and feel. I assume borates with a heater is ok?
Chlorine I assume I can ignore as long as I follow the CYA adjusted values? I'm running his about 4.5 ppm right now with a CYA of 45ish. Pool is crystal clear and staying that way at these levels.
Since it's a vinyl liner pool, I had assumed I could ignore CAL. I've not tested it at all, never do in my VL pool either, but I don't want to risk damaging the heater. I had thought CAL to watch as it could lead to scaling if your chemistry got out of whack, but the low recommendation confuses me. Should I test and adjust to keep CAL in these ranges?