Quote Originally Posted by Rangeball
Only when there is a need to. In the past, I was shocking everyweek, just like the pool store recommended.

This year I shocked when we opened, and haven't needed to since.

As long as you stay ahead of your pool, shocking is rarely needed
Same here. Do you have a kit that tests free and combined chlorine? As already mentioned shock when cc>0.5. As a safe measure if you have a large amount of people in the pool for a party or something I am sure it wouldn't hurt to throw in a little extra when the party is over. Download the bleach calculator if you haven't already. Great little tool