Well, I have read about it, but this was a first to me. The fermentation has been so active in my Hefe that it blew the lid right off the fermenter. It was off for about an hour before I realized what I heard was the lid blowing off. Will the air that contacted it ruin it, or should I be ok? I put a blow off tube on it, and it is still as active as could be. Its filled close to a gallon in less then 30 mins at this point. Just hoping that its not ruined.