Hi guys, Got a bit of a weird situation. So I made a 3 gallon batch of apple cider last October and everything went smoothly. It's still in the secondary carboy now (March 17th) and I was planning to bottle it today. However I noticed that there are suddenly bubbles coming up again. Not a lot of bubbles, but enough to make a small ring of foam around the top near the airlock. It stopped fermenting last November, and has been sitting quietly until today. The location, temperature of the carboy has not changed. I can't for the life of me figure out what is happening. Anybody seen something like this before?