I'm confused

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I have tried to search for answers, but my pool test numbers are so different, I'm not sure what to add.
I just opened the pool Friday, it was green and cloudy so I spent the first 36 hours trying to keep the chlorine high.
My pool is IG and gunite(?) appr. 20,000 gallons. It's a free-form shape and that's my best guess.
The first 24 hours I used 68 gallons of bleach. I closed the cover because it rained 1.4" last night. I opened it back up this morning, the water is cloudy, but blueish. I got one of Ben's test kits late last year, so I used it this morning.

Temp - 69
FC - .5
TC - 4
ph - 6.8
TA - 250
CAL - 0
cya - 0

Last year I had too much cya, over 150, but I got my test kit too late in the year to use it. I knew my chemistry was screwed up. I also have a foaming problem related to adding the wrong kind of algaecide trying to get rid of a re-occurring issue with mustard algae.
I added about 2lbs of cya and another gallon of bleach and a lb of borax. How do I add calcium?