I have 41,500 gallon gunite freshwater pool sanitized by chlorine and ozone. My CYA level on 5/19/23 was 137. I quit using stabilized chlorine tabs and instead used a cup of Poolife Turboshock every few days for chlorine. On 6/30 the CYA was 165 and today on 7/6 it’s 184! What could be causing it to continue rising when I haven’t used stabilized tabs since May? I have a motorized cover that sits in a well, so we lose a fair amount of pool water into the well that gets replaced with city water by an auto-feeder.