I brewed a kit this past Saturday called Caribou Slobber Brown. I was pushed for time at the end of the day and didn't take a hydrometer reading. Anyway the airlock started going crazy the next day. It went on all day. I've checked on it a couple of times today and no airlock activity at all. I have a Fat Tire clone fermenting next to it. There is still airlock activity after 8 days with that one. Is there anything I need to check on or be concerned about or just let it go for a week or so? Thanks