Is it possible there were other dissolved solids in the hydro jar? Break material etc. otherwise I'm not sure.....but I will say I don't think that your efficiency was that high with a wheat on your first all grain....maybe. Probably not.
BL, CL, Miller etc. is like makin love in a canoe.....
its fkin close to water.
Lagering/conditioning: German pils, Dortmunder
Lagering:Kolsch, Dusseldorf alt
American Amber, Red ale
Double ipa, Rye ipa
Fermenting: German pils
Wheat 1,Wheat 2
All to be kegged and served by May 10