Brewed a marzen with an expected FG of 1.012. Fermented in the mid to upper 40s. Took a hydrometer reading the other day and it was very close to 1.012 so I moved the fermentor to room temp. After 24 hours, I'm still getting bubbling in my blow off tube once about every five seconds. Should I still be seeing such active fermentation during the d-rest? I thought as close as it is to FG, I wouldn't see such activity.