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

[smallpooldad]

Thank you both for your replies.

The pool is saltwater set at 3000 ppm and is controlled by a Pool Pilot Auto Digital Controller. Setting the ph at 7.5 allows it, under normal circumstances, to never exceed 7.5.

As the pool never gets colder than 78 F in the winter and never hotter than 88 F in the summer it seems the following parameters would be best according to the "Pool Equations" spreadsheet. This way no parameter would need to be changed.

Measured pH 7.5 7.55
Total Alkalinity (ppm CaCO3) 70 70
Free Chlorine (ppm Cl2) 5 5
Cyanuric Acid (ppm CYA) 35 35
Calcium Hardness (ppm CaCO3) 450 450
Total Dissolved Solids (ppm) 4,000 4,000
Total Sulfate (ppm SO42-) 0 0
Total Borate (ppm Boron) 50 50
U.S. Gallons 10,000 10,000
Temperature (F) 78 88
Total Chloride (ppm NaCl) 3585 3588.1
Carbonate Alkalinity (ppm CaCO3) 52.5 50.3
Langelier Saturation Index (LSI) -0.16 -0.03
% HOCl (vs. Total Free Chlorine) 1.30% 1.20%
OCl- (as ppm Cl2) 0.074 0.093
HOCl (as ppm Cl2) 0.064 0.062
Calcite Saturation Level (CSL) 0.51 0.66
Calcite Saturation Index (CSI) -0.29 -0.18