I am confused, the pool CH is reading at 475 and seems to be climbing, the CH on the water source to the auto-fill when tested on its own is 100. Whats going on here, could the water be picking up Calcium from the pool?
TA-100
CC-0
FC-3.5
CH-475
PH-7.6
CYA-40
TA-100
CC-0
FC-3.5
CH-475
PH-7.6
CYA-40