Save the pucks to use when you go on vacation. As long as they are kept dry in the closed container, they will be fine.

You will know when you can quit shocking the pool when the following conditions are met:
1. The water is clear.
2. You have no more than 0.5 CC.
3. You lose no more than 1ppm of chlorine from sundown one evening to within an hour of sunrise the next morning.

We then advise keeping the chlorine at shock level for one additional day and then you can let it drift down and stay within the appropriate range based on the Best Guess chlorine chart.

Hope this helps.