- May 21, 2015
- 157
- Pool Size
- 33000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 700
I puzzled and need some guidance as to what is most important to prevent calcium scaling. Last year I closed my pool with the following readings:
Water Temperature 61
FC 21.5 As I slammed before closing
PH 7.4
TA 70
CH 575
CYA 60
Salinity 3000
CSI -0.39
When I opened my pool I had scaling. However, my reading at opening were as follows:
Water Temperature 53
FC 0
PH over 8.4 based on the PH test scale
TA 120
CH 500
CYA 60
Salinity 2900
CSI 0
So yes, my PH went above 8 PPM, but the CSI was 0. I was told when closing my pool on this forum that as long as CSI was between 0.6 and -0.6 the high CH would be ok. Any thoughs would be really appreciated.
Water Temperature 61
FC 21.5 As I slammed before closing
PH 7.4
TA 70
CH 575
CYA 60
Salinity 3000
CSI -0.39
When I opened my pool I had scaling. However, my reading at opening were as follows:
Water Temperature 53
FC 0
PH over 8.4 based on the PH test scale
TA 120
CH 500
CYA 60
Salinity 2900
CSI 0
So yes, my PH went above 8 PPM, but the CSI was 0. I was told when closing my pool on this forum that as long as CSI was between 0.6 and -0.6 the high CH would be ok. Any thoughs would be really appreciated.