I appreciate the information. I know I need a hydrometer and definitely plan to buy one, I was just hoping to gain some insight on what to watch for as a clue fermentation is complete. The reason I ask is that I have been told in a different post that I underpitched my yeast. I thought the Wyeast smackpacks were for 5 gallons as they advertise, but others have said they are for 2 gallons. My batch is about 2.125 gallons so I pitched about half the swelled smackpack (no starter). I would say that fermentation seemed to be immediate and vigorous (within a day for sure), but I'm not speaking from experience. Now at day 10, the foam (krausen?) subsided about 2 days ago, but I definitely am still making CO2 and I can see bubbles and debris churning around using a flashlight. Can I expect things to be totally still at 14 days, or will there still be a small amount of activity?