Well, I racked to secondary last night (2.5 days after pitching) because there was very very little activity in the primary. There is very little in the secondary, but I'll let it sit. It's only 4 gallons, by the way, in a 5 gal. fermenter. Lot of air space. Don't know what happened, I think my pot markings don't jive with my bucket markings. Anyway, any downsides to all that airspace in the fermenter?