I just transferred my brew to my secondary. Here are some mistakes I've made: I broke my hydrometer so I don't know where the gravity is at. I did however, taste a little, and I'm slightly frightened as it was a little bitter, and I added lactose to the mix, as well as cocoa (it's a stout). I figured it would be much smoother. Also, there was a powdery taste. Could this be the cocoa?. Should I be concerned already? Also, the airlock moves probably once every ten seconds, which also bothers me. Comments and concerns are welcomed.