Quote Originally Posted by dianam
So what do you use to shock with then?
Bleach. "Shock" is an action, not an item (although there are items labeled "shock", but the whole purpose is to still bring your chlorine level up to a certain level...what's called "break point". Break point will depend on your CYA level. As previously mentioned. See the thread called "Ben's Best Guess CYA Chart" for recommended chlorine levels.