Originally Posted by mayday1019
I am about to rack the wort into the primary. I am using a 6 gallon carboy. Is that enough room to not have to worry about using the tube?
Is it a 5 gallon batch--I assume yes.
It depends on how vigorous a ferment you have: you may or may not need a blowoff tube. If you prefer the airlock, you could start with the airlock and keep a close eye on it. If it is, or appears close to, spewing kreusen into the airlock, take it off and install a blow-off hose.
If you have the gear you need, there's really no reason not to just start with the blowoff hose, though. It *is* an airlock--exact same principle.