I have a 15,000 gallon plaster pool and add 3 cups bleach in the evening. This takes it up by 1ppm (to about 2ppm total) and I lose about 1ppm the next day. That's 24 ounces a day, so the 174 ounce jug of bleach lasts a week. CYA is about 25ppm.

One cup (8 ounces) of muriatic acid each day holds the pH steady at 7.4, so one gallon (128 ounces) lasts two weeks.

Clear blue so far.

TW