Its been a month since your original post, so don't know what your numbers are. Going by your original numbers, you need chlorine NOW, and you need CYA to keep from losing your chlorine later. The best way to get you chlorine up NOW is with plain bleach and get the CYA in when you can. Dichlor will do both, but if you don't have it on hand, use bleach. From what I have learned on this forum, I use dichlor to get my CYA up in the spring and then only bleach the rest of the summer, and that's it for sanitation. As far as pucks go, they also add calcium, and you didn't post calcium numbers so I don't know if you need it or not. If you have a vinyl lined pool, you don't. Only put in your pool what you need.