I brewed my first apfelwein 21 days ago today. I am familiar with beer and fermentation and would expect low - no airlock activity within 3-4 days after pitching. my question is this after 21 days iam still getting fairly regular bubbling in my air lock about 1 bubble every 25 seconds. i am using lavlin ec-1118 yeast and I am fermenting 5 1/2 gallons at 68-70 degrees constent. 21 days seems like a long time to me but hey what do i know this is a first to me. any thoughts?