Re: Brettanomyces Pellicle
Iím not sure what the technical difference between a krausen and a pellicle is (or even that there is one), but in my limited experience with Brett C as a primary fermenter it seems to act just like a regular yeast. That is to say that for about a week I get a large foamy head that falls when activity is complete leaving the top of the beer clear. After two weeks or so I transfer it to secondary, having given time for a good deal of the Brett to fall to the bottom of the fermenter.
This is less than 24 hours in on one of my Brett beers:
Beers that I have added Brett C to after primary fermentation have eventually grown sort of a funky pellicle like thing.
Not the best shot, but the one in the back right corner is an Old Ale that had Brett C pitched into it about 3 months prior to this shot: