I started taking care of my ancient plaster pool about a month ago, and according to my test kit it's time for the pool to be shocked. I've never done this before, but according to http://www.freepoolcalculator.com I need to add about 240 fl. oz. of 8.25% bleach in order to shock the pool...
I know that many chemicals shouldn't be added to the water all at once, but is this true for bleach when shocking the pool? Put differently, should I add all 240 oz. of bleach at the same time?
Thanks, and sorry for the noob question!!