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29Aug19 brew day Use slurry from 6 liter starter Mill gap set to .035 in. First batch with new setting (previously was .028 in.) Collect 8 gallons RO water for mash in and step infusions + 6 grams CaCl2 Ca 54 SO4 0 Cl 96 predicted mash pH 5.36 https://www.brewersfriend.com/mash-chemistry-and-brewing-water-calculator/?id=X9B2BN1 Also collect additional 7 gallons RO water for sparge (no mineral additions) 1 day before brew day make a 2 liter starter from 125 mL slurry. Pitch entire starter. Yes, done. Strike 158F 1.25 qt/lb x 12.8125 lb = 16 qt Mash at 144F for 40 minutes, add 2-3 qt boiling water to hit 152F for 40 minutes, add 8-10 qt boiling water to mash out at 170F for 15 minutes. Collect 9 gallons for 90 minute boil. Target FG 1.012 Actual mash pH after 10 minutes: need to recalibarate because I don't trust reading less than 5 LRG 1.015 PBG 1.040 Predicted OG 1.060 Actual OG 1.056 Measure pH after collecting 6, 7, 8, 9 gallons do not exceed pH 6.0. Did not do this. 1634 pm Cooled to 46F oxygenated for 90 seconds and pitched Hold at 46F for 12 hours before allowing free rise to 50F. Didn't hold at 46F, allowed to free rise to 50F immediately after pitching. Next time do the hold at 46F. This time, Hold at 50F until SG drops below 1.020, attach spunding valve set to 1.1 bars (16 psi) and allow to free rise to 65F to finish fermentation. Allow additional 3 days for diacetyl rest. Cold crash, add gelatin, keg. Lager at 40F for 6 weeks. Lower to 33F for 2 more weeks. Bottle. Checklist: Minerals in mash water, yes calibrate pH meter, yes clean remaining fermenter parts, yes pickup tubes in BK and fermenter, yes nutrients + whirlfloc, yes replace PRV with spunding valve whem SG < 1.020 yes dump trub after 2 days, nope, did not dump trub until ? attach coil connections, yes boil oxygen injector, yes sanitize all components before assembling fermenter, yes install Tilt, yes Fermcap S in BK, yes 2Sep19 1530 pm SG 1.019 attached spunding value set to 1.1 bars and closed blowoff ball valve. Also raised temp to 65F (free rise, no heater) 7Sep19 start lowering temp 2F per day until hitting 38F 16Sep19 accidentally lowered to 38F by hooking up wrong pump power supply. Thought I was cooling Wit #6. Wrong. Might as well just leave at 38F for 2 weeks. 31Oct19 kegged FG 1.012 . . . . . . . . .