I have an 18 AG that I maintain using the BBB method that I have learned here. I have been guiding 3 families using the methods I have learned here. All of them are the happiest they have ever been with their pools.

Three of the pools loose about 1-2 ppm cl a day while the other looses 4-5 ppm per day.

His numbers are

cya 40 ppm
alk 180 ppm
ph 7.8

All of the pools have similar numbers. The only difference is the pool with the high cl demand is in full sun all day, and the others are partially shaded.