Hi guys & galls,
I see the Chlorine / CYA chart references CYA levels and required chlorine levels for both non and SWG pools.
But why, when the non-SWG chart ranges from 20 - 100 ppm CYA, does the SWG chart only cover 60 - 80 ppm CYA?
What CYA levels should a SWG hot tub / spa be at?
(I've tried altering the CYA levels on the Pool Calculator, but it doesn't change its suggested bleach dose, even though you guys say it will / modify the bleach requirement).