thanks a lot for the detailed explanation! I don't know the CYA level at closing the pool, unfortunately, it was our first season and we did not really know much. We'll be sure to keep that in mind next season. So, basically, the plan is to keep shocking the water at least twice a day? I work from home two days a week, so I could shock it more often then, but other days we are all gone until about 5-6 pm. If I keep using dichlor to shock, how much should I add each time - 1 lb to get 15 ppm? Sorry, I am very new at this and chemistry was never my strong subject.
Thanks so much!