See, now that’s exactly what I was thinking when the guy at the LHBS told me that there would be too much air on the beer in a 6 gallon. There is still some sugar conversion in the secondary. Sugar conversion produces CO2. CO2 is heaver than O2. Therefore, any CO2 production in the secondary will push the O2 out of the airlock.
Anyway, I’m thinking of using a 6 gallon secondary for my peach cream ale because that’s where I’ll be adding the fruit.
Planning: Agave Witbock, Raisin Beer
Primary: GF Hazelnut Stout
Tertiary: Cranberry-Pom pLambic (est. bottle date: 03/01/08)
Drinking: Cab.Sav/Merlot Wine, Grand Cru, Hazelnut Stout #3, Ordinary Bitter