Today I updated my municipal source water profile, noting very minor changes in some of the anions and cations, alkalinity and pH. The past few days I have been tinkering with a Vienna Lager recipe, trying to hit a target pH of 5.4 while aiming for a balanced profile. Using nearly equal additions of calcium chloride and gypsum, I have a projected mash pH of 5.43, which is in acceptable range according to the recipe builder. Without any other acid on hand except citric acid (which would require a many grams addition), my best remedy is the addition of 1 ounce of acidulated malt, which gets me well below 5.4. Should I just settle with pH 5.43, or try to get it lower still?