I have a 22,000 gallon salt pool. I've been noticing that I have a lot of chlorine loss each day. My cyanauric acid levels are on the lower end of normal (about 40ppm). I am running my salt cell at 50% for about 12 hours per day. By my math that should add a little over 1 ppm of chlorine to the pool per day. I find myself adding about a gallon of concentrated bleach to the pool in the evening. By the next evening chlorine readings are close to zero again. The pool is in full sun from about 10 am to 3pm and there are an average of 4 kids per day using the pool for several hours.
Is this chlorine loss normal? Should I try adding more stabilizer? It seems my alternatives are to continue adding a gallon of bleach or to run the salt cell longer or at a much higher percentage. Thanks!