Pool has been rock solid all summer with dialed in chemistry. Now that the water is cold my CSI keeps pushing down to around -.60.
In summer I kept PH between 7.5 and 7.8. Let rise to 7.8 knock down to 7.5 repeat. Have my TA at 70 which keeps my PH rise reasonable. But with the cold water if I reduce PH to 7.5 it gives me the low CSI. Should I keep the PH up in the 7.8- 8.0 range to keep the CSI at around -.35?
Current #s with water temp at 59
FC 9
PH 7.5
CH 300
TA 70
CYA 70
Salt 3400
In summer I kept PH between 7.5 and 7.8. Let rise to 7.8 knock down to 7.5 repeat. Have my TA at 70 which keeps my PH rise reasonable. But with the cold water if I reduce PH to 7.5 it gives me the low CSI. Should I keep the PH up in the 7.8- 8.0 range to keep the CSI at around -.35?
Current #s with water temp at 59
FC 9
PH 7.5
CH 300
TA 70
CYA 70
Salt 3400
