Can’t get CA to register
I am having problems the CA will not register. I have added conditioner that is 99% cyanuric acid 7.5 Lb over 2 days and another 7.5 lb over next 2 days my pool is 35.000 gallon, that was 4 weeks ago. I have used test strips and chemical test and get the same reading, 0 Chlorine last about 2 days have shocked it. Green Algae grows with chlorine level at 3.
PH 7.2
Alkalinity 120
Chlorine 5