I seem to keep overshooting my bleach add. Tested last night at 5ppm, and added 6.5 cups of 8.25% bleach to hit 7ppm. This morning tested at 9.5 ppm, which is exactly what I hit with the first treatment from 2ppm. If I adjust the calc to match, it comes out to an 8k gallon pool.. which is less than half. And that's not even accounting for loss over the night.