Recently started using Brun Water to acidify my sparge water with lactic acid. When I'm doing a brew where I'm building water from scratch, based on distilled water, do I enter the Water Alkalinity on Tab #2, Cell B4, as zero, since distilled water plus gypsum & CaCl2 has zero alkalinity, according to Tab #3, Cell L12?
And then when I enter a zero alkalinity into Tab #2, it tells me to use zero lactic acid in the sparge water. I guess I should believe this, but am having trouble figuring out why... won't the distilled water still have a pH of around 7, and I'd like it to get down to 5.5?
thanks
red