I did as you said and shocked the pool yesterday ..... early this morning, it had lost 1 ppm (down to 19 ppm). I checked the chlorine again this afternoon. The pool had not had any use and it was a hot and sunny day. The temperatures were about 97 degrees F plus very humid. South Georgia is warm during the summer.

The chlorine level (FC) had dropped to 8.5 in just that one day. That seems to me to be quite a decrease. I am running my pool pump/filter about 8 hours per day.

As to you saying that 1.42 gallons of bleach per day would not seem that high to you, the cost would be about $2.50 per day during the season. How much do you add per day to your pool in the "winter months". The reason that I am asking is to calculate what the cost savings might be for a salt system. I wonder if the power used by the salt system eats up any cost savings in chemicals?

JHK49