I have just started my frist batch of home brew all be it from a time. its is now sitting in the fermenting tub doing itsd thing. But from memory and I am going back a few years to when I was a lad and my dad brewed his own beer, the fermentation bucket my dad used had some sort of airlock bubbling away on it. the one I have has no airlock and the lkid is now starting to buckle, is this the norm??