I've been using an auto-siphon to rack, but I was hoping that there might be some way that I wasn't thinking of to use a keg and CO2 to "push" the beer out of the carboy so I wouldn't have to move the carboy and disturb any sediment that had fallen out of suspension during lagering. I can't think of a way to make that work, but people here have done all sorts of clever things I wouldn't have thought of.
Originally Posted by hopsalot
2. Many times I will ferment a 3 gallon batch in a 5 gallon carboy. CO2 is heavier than O. Your yeast produces CO2, which will create a blanket on top of your beer. There is not much to worry about.
For fermenting that makes sense, but this is lagering after being racked from the primary bucket. I don't think very much new CO2 would have been produced, but maybe some came out of the liquid during racking or sitting.
I'm definitely kegging this either way, so this question is purely academic, I'll find out in a few weeks what the real answer is.