Originally Posted by bubbawadew
.... I brewed this batch on Saturday the 5th and saw sings of fermentation in about 4 hours. Last night i noticed there was about two bubbles per minute in the airlock. Is that normal? ...
Looks like other posts have answered your other questions so I will just respond to this one. Quick, and vigorous, fermentation starts are not unusual for ales. It is also not unusual for ales to complete most of this primary fermentation activity in a short period of time (days) and then settle down to less activity.
As others have stated however, air-lock activity is not necessarily a good indicator of ferm activity (other things, like temperature changes, can cause your air-lock to bubble). Only SG readings can definitively answer that question.