CSI in winter

Cards12783

Member
Aug 17, 2023
11
Memphis TN
Looking for some insight. I have a pebble/plaster pool. I keep my “open” during the winter but don’t swim in it. Typically during the warm season when water is warm and I’m using salt I keep my PH in the 7.8 range and that keeps my CSI right around 0. Now with the water cold and not using salt my PH won’t go above 7.5-7.6 and my CSI is -.40. Should I raise my PH or CH OR alkalinity to make it closer to 0 CSI or leave it like it is?

PH 7.5
Alkalinity 90
CH 340
CYA 35
Water Temp 50
CSI -.42
 
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