I use distilled for an ipa i made. For 10 gallons for mash and sparge I added: 14 grams gypsum, 1 gram Chalk CaCO3, 2 grams baking soda, 3 grams Calcium Chloride CaCl2, and 6 grams Epsom Salt MgSO4. that would give me a hoppy bitter profile according to the brewers friend water calculator.