This is my 6th batch but my first time using Allegro yeast with Optiwhite and fermaid O 1/3 in. There has been no foam as advertised. I have moved it to carboy for secondary fermentation 6 days ago. I am starting to see a film on the inside top of the carboy but none on the wine. I know with foaming yeast, there is some film but not sure if this also happens with non foaming yeast because it never foamed up to reach that level that I am aware of. I have it in a refridgerator at 65 with ink bird, so temperature is within 1 degree. Is this something I need to worry about or is it normal?