Quote Originally Posted by kaybinster
Why do you want to add calcium chloride to raise calcium, why not calcium carbonate which is plain old lime. You can buy a 50# bag at the garden store very cheaply -- remember to get the white powdered kind not that newer pellet style.
Since what the pool stores sell to raise calcium is CaCl2, I figured that is what I needed. It is also what waterbear suggested, and is the chemical in the bleac calc program.

Thanks for suggesting lime. I will look into that.