My salt clorinator is not working, and I am waiting for a part. If I use bleach for my temporary chlorine solution, how long do I need to wait to swim after adding bleach, assuming I am not shocking, but just trying to maintain chlorine?

My pool is about 20,000 gallons and CYA is about 50. I have read that 1 gallon of 6% bleach would raise chlorine by about 3PPM. Does this sound right?

How much chlorine should I add daily? I have a test kit, but I want to start with a good estimate.

PH is 7.6, Alkalinity 100, Calcium 225, CYA 50, Chlorine 1.5

Thanks,
Dan