cya increase

How would you reccommend I raise CYA in an 30,000 gallon inground pool? Use conditioner? Tabs? Is a combination ok? I would prefer to help raise it with tabs since I have some tabs and liquid chlorine is very expensive where I live. Current numbers - FC 2, PH 7.8, ALk 55, CYA 15 Thank you...

We just opened our ag pool up and it was sparkling clean! From what I can tell, our numbers seem to be alright but the CYA is low. What are some recommendations for raising it to about 50? Our pool is in direct sunlight so the chlorine takes a beating. Should we put the solar cover on it until...

What? I started my SLAM at 40 CYA, using liquid chlorine, 8.25% Sodium Hypochlorite. I just finished my slam, checking my levels and they are: FC: 13.5 CC: 0 CYA: 100 Where did this CYA come from???