I've been looking through some of the information here, and I think I've got it down, but I would appreciate some confirmation before I do anything destructive. Here is my well water report:
Hardness (CaCO3) 150
Total Dissolved Solids 210
not on the report, but-
So then, to brew a 5 gallon batch of pale ale with 11 pounds of grain, I was planning on adding .6 ml of lactic acid to each gallon of mash water and sparge water, and then adding .5 grams of Gypsum and .4 grams of Magnesium Chloride for each gallon of wort into the kettle. That should give me a finished water profile of Ca 84.5, Mg 15.9, Na 9.1, SO4 82.8, Cl 39.4, HCO3 68.5, Total Hardness 277, Alkalinity 57, RA -13, and SO4/Cl ratio 2.1.
If I understand this correctly, I should add the acid to the mash tun after I've added the water to the mash. And, when adding the salts to the kettle, I should calculate the amount of salts for the volume of wort post-boil rather than pre-boil. Is that correct?