Jim,

You can either pour the bleach in the skimmer, in the pool in front of the return jet or dribble around the perimeter of your pool. In any case you shouldn't need to run your pump for more than an hour or so afterward to circulate the chlorine - you don't need to run it all night (unless you want to).

Ultra bleach is usually 6%, and regular bleach is usually 5.25%. There are also some bleaches out there that are only 3% so you should check the label - it should tell you somewhere on there.

Peter