If your FC is .5, and your TC is 1.5, then your CC is 1-not 0.
If you look at the CYA chart, you can see what your FC levels need to be, for normal everyday use and also see the far right column- that's your shock level. While this number differs from the Pool Calculator recommendation, go ahead and just use Jason's recommended 18 as your shock level.
Now go to the Pool Calculator, enter in your gallons in the "size" box. ( I think your pool is really 13,500 gallons, I have the same size pool.)
In the "now" column, put in .5. In the "target" column, put in 18. Hit calculate. It will tell you how much bleach to add.
Tell me what you come up with....
So you need to add that amount of bleach or liquid chlorine, which is "shocking your Pool". In your case as your calcium levels and CYA levels are on the high end, you only want liquid chlorine or bleach for shocking.
You'll need to shock until your FC holds overnight. The only way to tell if the FC holds is with an FAS-DPD test, which is included in the two test kits we recommend. So if you haven't done so, I recommend you order the kit. Otherwise you will need to keep shocking until the water is clear. Make sure you are running the pump 24/7 while this is happening.
Read "How to Shock your Pool" and "Perform the Overnight FC Test" in Pool School.
You'll probably need to repeat the shock process a couple of times.
Hope this helps. If you are confused at all, ask away.