How much chlorine bleach should you put in 80 gallons of water to purify it for swimming?

Question

we recently bought a small pool and are unsure how much chlorine to add. help, anyone???

Answer 1

It depends on which type of chlorine you're using.  The manufacturer should have included instructions on who much chemical to add per gallon to achieve a certain level of change.  You basically want 3-5 ppm of 'free chlorine' in the pool.   I would be very careful as you do the math because you are dealing with a very small amount of water.  I've included an article that should help you out.