How to raise calcium levels?

Ryan

Elijah

marble chips, a piece of shell rock or sandstone, shells... choose

Shelby

Calcium chloride.

David

And how to lift it up?

Debra

calcium reactor, right? there's also a discussion here click

Ronald

You add the crumbs to the soil, place the stones as decor, and just toss in the shells... gradually, calcium is released into the water. Exactly, or eat all of it.