Howdy folks, long time no brewing. Looking to get back into it this weekend (thank goodness) and have a quick question. I use a Berkey Black filter for my water and it states that it removes 99.999% of Chlorine, am I in effect needing to add chlorine back in?
Yeah, it is a chemistry issue that boils down to the a lousy 'common name' of Chlorine to a very large compound of either Trichloroisocyanuric acid, Trichloro-s-triazinetrione or the dichloro version of the same compound. This compound is used by water treatment facilities to kill bad stuff in the water (like fecal streph, etc.) The name Chlorine was first an element on the periodic table before it was taken and used as common name for a common compound. An element means it is at its most basic form (not counting protons, electrons, neutrons, or people from who-ville) Chloride ions are what we want to 'count' in our beer water recipes. Chlorine carries the chemical symbol Cl also by the way. So, when we add salt which is an ionic compound of Sodium (symbol Na) + Chloride (symbol Cl) the water dissociates the compound NaCl into sodium and chloride ions... that is what you 'count' in your water recipe.
Like LiquidGold said, 'you don't want chlorine' but you do want chloride
Filter out the chlorine compound and add back (if necessary) NON-IODIZED salt. You can find it in the spice section typically, be sure you read, you don't want iodine or yellow pruscate(sp?) of soda in it... just Salt, nothing but NaCl ...
Good Luck!