I'm fermenting my second brew. I have a 6.5 gal plastic bucket primary fermentor with the three piece airlock. My problem is that when i pitch the yeast i don't get any bubbling. I've researched this topic on the this site and tried to eliminate all of the possible problems (ie. making sure the lid is closed.....). My final gravity was what i expected and when i looked at the brew, krausen had developed so i'm assuming the fermentation took place. Has anyone had this experience? Is it that i'm using the 6.5 gal bucket and not a 5 gal carboy(more space for the gas to fill up)? Is it the type of air lock that i'm using (it does fill with gas but doesn't actually bubble and when i push on the lid of the fermentor it forces bubbles into the airlock)? I know i'm over analyzing this subject but the sweet sound of the airlock bubbling was something i was looking forward to and i feel i'm missing out on part of the brewing process.