I am experiencing a weird phenomenon. I have been bulking a red for 6 months and recently added a 1/4 teaspoon k meta. I had about an inch clearance between the wine and the airlock. The next day the wine was up to the stopper and entering the airlock! I siphoned off back down to one inch and 3 days later same thing. What is happening here??? How is my wine 'growing'??