This is my first post. Love this site and all the advice. I'm brewing an Irish dry stout Extract kit. I brewed it Saturday morning. Starting Gravity was on point at 1.068 and on the kit it says 1.071 +\-. Fermentation started in about 5 to 6 hrs. Not the most vigorous fermentation but still strong. I used Windsor yeast and kept temp between 64-70 degrees. Got home tonight and no activity in airlock took a reading which was 1.021 witch is right on par according to instructions (1.014-1.022) so is fermentation done?