film yeast

This is my first batch ever. I used a storebought, pasteurized, 100 percent juice with a wild yeast starter I made from storebought apple juice and organic berries. A few days into fermentation I noticed stuff growing on top that smelled like yeast. What is it? My cider doesn't smell bad, it...

I have 198 gallons of cider fermenting in 6 carboys, 2 brandy barrels, and one plastic barrel. The last pressing was used to fill the plastic barrel, and by the time I got it in the basement, I was exhausted from cidermaking and had to attend to a bunch of other things in my life. As a result...