Here's a picture of what I'm talking about.
So for reference, I got the Everyday IPA kit from Brooklyn Brew Shop for christmas, and I just got around to using it last week. This is day 4 of the fermentation period, and I just switched the airlock on in place of the blowoff tube.
After the heavy bubbling from the first few days of fermentation, theres this weird film at the top of the jug. Can anyone tell me what this is and if it's bad?
Thanks!