Brewing a Koelsh, all grain, 12 lbs, strike temp ok, first rest at 125 degrees 20 minutes, 60 minutes at 152 degrees, Sparge two with 170° water 15 minutes each, I should include according to brew calc 4.9 gallons too steep the grains to start, 60 minute boil, missed my OG shooting for 1.45 ended up with 1.20, I am completely lost