50% RO, 50% A2 H2O. Strike with 2.8 gal. Add 1g Ca(OH)2 to mash. Target 154F. Acidify 5 gal sparge water to 5.20 pH. Add 4g CaSO4 to kettle. Copper up to 6.5gal, boil 60 minutes. Add invert@5 min before EOB. KO@ 66F.