CYA dropped significantly.


Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
Laughlin, NV
Your fill water CH is 250 ppm. You evaporate at least 1 to 1.5 pool volume per year. So your CH rises by 300+ppm per year. With softened water, the CH will not rise. And thus you will not have to drain the pool for many years, if ever, for water chemistry issues.