Drained and refilled pool

Bozer4

Well-known member
Jul 11, 2019
52
Manteca ca
Hello, I drained approximately 80% of pool water using pool math and refilled due to high CH levels. CH was at 825 ppm and city fill water is 90 ppm.
Chemistry levels now at:
CL 7
CC 0
Ph 7.8
TA 80
CH 210
CYA 50
WATER TEMP 71*
CSI INDEX -0.12

My CH is a little lower than recommended levels but it should be in range in a couple of months with evaporation and water refill levels at 90 ppm. Will the plaster be okay with CH lower than optimal level for a couple of months? It seems counterproductive to add calcium knowing my levels will rise with fill water.
 

Bozer4

Well-known member
Jul 11, 2019
52
Manteca ca
Don't add CH. Your CSI is fine without it.
Good to know. The chemistry numbers I posted were from a couple of days ago. I just retested and my Ph dropped to 7.6, TA rose to 90, and water temp dropped to 67*. This puts my CSI at -0.29. I think my Ph and temp will rise so that should make the water a little less negative.
 
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