- Jun 14, 2012
- 2,668
- Pool Size
- 13500
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool Edge-40
I remember reading in the Extended Test Kit directions thread that the CYA measurement has a +/- of 15 when below 90. Given this fact does the CYA/Chlorine chart take this into account already? Is the minimum Chlorine suggested OK if the real CYA level is 15ppm lower than the measured value?
There is no problem that I am trying to solve BTW - just curious mainly.
There is no problem that I am trying to solve BTW - just curious mainly.