So I brewed a Belgian Dubbel last night, O.G. 1.071 all-grain. Everything went smoothly. I had a small starter culture and pitched the yeast. Active bubbling in the air lock at just a couple of hours. Then I get home from work today, I walk into the apt and say to myself, it smells awfully yeasty in here...a little too yeasty. Of course its blown over through my air lock, onto the carpet (damn that decision not to leave the carboy in the spare bathtub). But I can't believe it blew over, I had about 5.25G of beer in a 6.5 G carboy. I've never had that much head space not be enough. Pain in my ass. Anyone else have that much head space not do the trick?