Quote Originally Posted by Snowymoon
I would like to use up my bags of shock. They are 1 pound each. How much should I use to shock the pool up to 20 ppm? A full bag? Once they are used up, I will be switching to bleach. I posted more about that in the chlorination forum.

Also, I can't point my return up. On the Intex pool, the return has a cap on it, and it is low into the water.
I'd save the shock for next year. Your CYA is already on the high side. Next year when you fill the pool you'll need shock and CYA.