there are a lot of different opinions on here. I have my own grain mill and my first AG was about 78%. I keep mine at the factory settings. It is supposed to be set up since they worked with the homebrew shop that I purchased it from. I have a barley crusher.
Too fine and you could get a stuck sparge. too course and you do not get the extraction that you want. Try and move it in a little and see if it improves.
Primary 1: Oatmeal Coffee Stout
Secondary: American Mild IPA
Keg 1: English Bitter
Next up: Double IPA for friend, Kolsch, Graff, American Wheat, Dunkleweizen.
Mine is at .037 now and I use a round cooler with a stainless false bottom and get no stuck sparges. I get 75% to 80% efficiency and that is what most brewers get that are mashing and sparging correctly.
Fermentor 1: Bill's House Ale II, Fermentor 2: German Helles, Fermentor 3: Bill's Schworzbier (Black Bier) Tap 1: Bill's House Ale II, Tap 2: German Hefewizen, Tap 3: Nut Brown Ale Future Brews: Stone IPA Clone, Blonde Ale, Budvar Clone, Newcastle Clone New toy: Blichmann 27 gallon fermentor
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