Slowly teaching my brother in law the BBB method, his test kit should arrive early next week.
He has a gunite IG pool 16x32x32 L shaped (aprox) pool around 30,000 gallons.
first two Lpool store results as follows.
Two tests
1st test, FC and TAC 0, PH 7.4, TA 70, CYA 100, CH 190, TDS 500 and...