Each time I've gotten my water tested at our local pool store, they tell me to adjust TA down by 40 points, since my CYA measures 100 ppm. Is this really necessary? The pool store measures:
CYA = 100 ppm
TA = 170 ppm (prior to adjustment)
Adjusting TA down by 40 ppm when CYA > 100ppm; is this really necesary?
Each time I've gotten my water tested at our local pool store, they tell me to adjust TA down by 40 points, since my CYA measures 100 ppm. Is this really necessary? The pool store measures:
CYA = 100 ppm
TA = 170 ppm (prior to adjustment)
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