CYA question! I am on week two of pool start up NEVER added any CYA but now my CYA is 45. Curoius what would cause a CYA to rise on its own without ever adding any in a new pool start up?
Yesterday CYA was 45,( up from 20 ), FC 5.5 , TA 100 , PH 7.8. (day beofre CYA was 40, CH 7.) PB put...