Hello all, just put up my 1st pool, an 18x48 coleman. Filled it up last weekend using our well water & subscribed to the pool calculator app to track my testing. My initial TA was 250 & PH was 6.9. I did an initial shock using 65% cal-hypo. Here's my testing today:
FC 3.8
CC 0
PH 7.2
TA 300
CYA...