What is the best Calcite Saturation Index (CSI) for a saltwater pool

[smallpooldad]

chem geek,

Thank you for your very quick reply. Yes the 70 setting is so we do not have to compensate for pH too often. The 7.5 pH we try to achieve to offset Hawaii's Volcanic Dust, aka Brown Dirt (Ferric Oxide or Iron Rust), which blows in at 16 mph to 26 mph. At higher pH(s), as you know, it goes out of solution and stains the pool brown.

One quick quetion should I use a CYA adjustment for Alk or is it in your spreadsheet?