FC + CC = TC so, something is not quite right with your cl numbers. My guess is that your CC is 1 instead of 2. You need to shock your pool. With a cya of 80, you should shock up to 20 ppm and try and get rid of that CC reading. Then, you should maintain your cl between 5-10 all the time. No more pucks. Your alk is a little low. Try adding a lb. of baking soda slowly to the skimmer. Wait awhile, then retest and redose til you get to 80-120. Your ph is OK at 7.2, but you don't want it any lower. If it drops any, add some Borax to get it back up to 7.4-7.6. Calcium level is irrelevent in a vinyl pool. Hope this helps. Welcome to the forum.
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