Friends,
I'm conducting a water exchange on my pool.
CH = 850 (! I was a bit shocked by this number, but we haven't replaced/exchanged water for 2 1/5 years, so I figure it is just a product of that)
Salt = 2000
Additionally:
TA = 110
CYA = 50
PH = 7.6
FC = 1
CC = 0
PWT = 67
FWT = 50
FW...