Thank you, Watermom. I didn't actually make it out to Lowe's today but will go first thing in the morning. I will also pick up bleach. The ingredients in the MizerMax Pac are trichloro-s-triazinetrione 99% and other ingredients 1%. It says available chlorine 90%. I guess this is my source of chlorine. I just don't know where it goes in the system. I will try to look that up. The one page of semi-instructions I DO have says "step 5) when chlorine reading is down to 1.0 ppm insert Aqua Smarte Plus MizerMax Pac." So it sounds like I need to turn on the pump add the bleach and the cyanuric acid (like you stated above) and check it daily until the chlorine reading is down to 1.0 ppm then insert the pac (after I figure out where to put it).

I will post numbers as soon as I have them. Thank you for getting me started!