Water balance and CSI

red-beard

Gold Supporter
May 27, 2019
562
Houston, TX
Reading through the Water Balance for SWG


The levels , especially the lower pH, put the CSI below -0.3 for my pool, unless I push my TA to the max recommended (80) and I push my salt level to the max for my system, 3400. At 7.5 pH, my level is -.26.

Mid level for the recommendations TA 70, CH 350, CYA 75, Salt 3400 and pH 7.4 leads to CSI -0.48. Even 7.5 pH the CSI is -0.40
 

red-beard

Gold Supporter
May 27, 2019
562
Houston, TX
With a pH of 7.6, TA 80, CH 350, CYA 70, Salt 3400, Temp 87, this leads to an "acceptable" -0.21 CSI. Are we supposed to run close to the -0.3 CSI? Is this to prevent/reduce scaling?