Add calcium or not bother

[red-beard]

Readings nearly perfect this morning (FC 9.5, pH 7.7, CYA 70, TA 70,CH 290, Salt 2900, BOR 20). Of course Poolmath flags the CH and Borates. I know 350 is "ideal", but with a CSI of -0.27, I think I'm fine. I prefer running on the lower end of CH and CSI with the SWG.
I can add borates, just haven't bothered yet this year. Thoughts?

 

[ajw22]

Your CH is fine.

What is the CH in your fill water? Your CH will rise over time as you add full water to replace water you lose from evaporation.