Originally Posted by jtejedor
I tried searching a bit and wasn't able to find anything so sorry if this has been covered before. Is there any way to add calcium alone to your brewing water?
No there is not. What you need in the brewing water are calcium ions since pure calcium would either not dissolve or react with the water as A.J pointed out. Ions dissolve in water b/c they are charged and since you can't have positively charged water you'll need to add a balance of anions (the negatively charged ions) along with the calcium. That balanced package is called a salt and there only a few calcium salts that are considered practical for brewing. Unless you want to explore other options the commonly used calcium salts are calcium chloride, calcium sulfate (Gypsum) and calcium carbonate (chalk). The latter can raise mash pH and may not what you are looking for when you simply want to add some calcium.
Here is a article that may help you: http://braukaiser.com/wiki/index.php?title=How_to_read_a_water_report
the section Atoms, molecules and ions
is what you want to read.
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