I just opened the pull and got the water level up. My numbers are as follows:

FC 0
CC 0
TC 0
pH 7.8
Alk 290
Cal 150
Cya 0

My pool is a 20,000 gal vinyl ig. And the water is green.

I know i need to shock it but how high do i need to bring the chlorine up?
And what about the cya and Alk?


Thanks