You add the amount of chlorine based on your test results. The amount, in ounces, is also dependent on the concentration. In example, if you need 10 oz. of 6%, you could use 6oz of 10% or 5 oz of 12%. They are all essentially the same chlorine chemical with more or less water.
The pool calculator.com is the easiest way to figure it out.
The pool calculator.com is the easiest way to figure it out.