Now that you're having to start over with 0 CYA, you could go ahead and use your chlorinator if you still have pucks left--just make sure that you adjust your ph as necessary, and stop the pucks when the CYA gets to your target, 20-40 ppm for most pools.

I find that it works well to leave my chlorinator running, but set at around 1.5, then use bleach as my main chlorination method--that way, if I get lazy, or it rains, or for whatever reason I don't get to test that day, at least I know there's SOME chlorine going into the pool all the time!

Janet