Hi, new member here. I've been a homebrewer for 10+ years, but have never really cared much about water chemistry other than to add a few teaspoons of gypsum to my IPA's and a teaspoon of calcium chloride to my Marzen's etc. So I've recently discovered the chemistry calculator and I love the feature but I do have a question. When I am only adding brewing salts to the boil and not the mash, I'm uncertain as to what I should set my water volume total to. The instructions say to use total volume but if I'm not adding and additions until after the mash, I don't see why I should include mash volume? Thanks!