I'm a newbie homebrewer and I just made my first batch this weekend. I cleaned/sanitized my equipment, followed the recipe, pitched the yeast and set my fermenter aside to start working @ midnight Sun. I checked it 6:30 Monday morning and it was already very active - I had foam coming out of the airlock. But when I returned home from work and checked it all activity had stopped - no bubbles - nothing! And there it sits today as well. From what I've read I should have active fermentation for 3-4 days before it subsides. So what's the scoop? How do I tell if it's still ok, or if I have a bad batch? Help!