Hello all. Here is my question/situation. I'm adding dichlor but my CYA does not seem to be going up as it should be. I opened my Michigan pool to dark dirty water. So I'm in the process of shocking it. I was assuming my CYA to be low or zero after the winter. I did not test it because the water was so dirty and dark. So I started to shock it using dichlor and liquid chlorine hoping to raise the CYA without adding/purchasing cyanuric acid. After nine 16oz. bags of dichlor my cya is still less than 20. I added five of the nine bags two days ago, and the other four bags yesterday a.m. Filtering 24/7. Water is clean, not sparkling. Still shocking.
FC aiming for 12
Shouldn't my cya levels be going higher than <20? Thanks for the help.