So over the past year I have noticed a "progressive" drop in my efficiency from 85% to 73% on both my systems ( EHERMS and 3 gal batch sparge/cooler). I can only assume that it is my crush because it is across 2 systems. I have a barley crusher for the past 4 years and have insured consistency with process and mill gap (.039). All other variables are "controlled" including water to grist at 1.75qt/lb, temp, time, mash schedule ( single infusion mostly), I mash out, I insure no dough balls and keep PH in a good range (I don't think this has a big influence on efficiency?). My first runnings are normally around 1.070ish seems conversion efficiency is good? Sorry so long it is just stumping me and I do have consistent efficiency and don't really mind it being low but thought I would see what you guys/gals thought?
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