Hi, I have made many beers in the past but this is my first wine. the must is a fig/apricot base with a few other things as nutrient. 6 hours after pitching there was a nice big layer of krausen. 12 hours after pitching most of the krausen was gone, and the top of the fermenter seems to be sparkling or fizzling. its not regular bubbling you'd expect from krausen, but its the same look and sound as a recently opened can of soda. is this normal?