I just put new water in my 25000 gallon plaster pool one month ago. Leslie's water analysis report said :
test condition Result
free available chlorine (FAC) low 0
total Available Chlorine (TAC) low 0
Calcium hardness (CH) ok 260
Cyanuric Acid (CYA) low 20
total Alkalinity (TA) High
test condition Result
free available chlorine (FAC) low 0
total Available Chlorine (TAC) low 0
Calcium hardness (CH) ok 260
Cyanuric Acid (CYA) low 20
total Alkalinity (TA) High