It's this, plus a tsp. of gypsum in the boil. I started making this beer before I ever did much with water. It turned out so well I didn't see any reason to do more.
pH 7.4
Total Dissolved Solids (TDS) Est 164
Electrical Conductivity, mmho/cm 0.27
Cations / Anions, me/L 2.8 / 2.7
ppm
Sodium...