Hegh
Well-Known Member
Well I mixed up a batch 7 days ago. All seems to be going well. The 5 gallons didnt even come close to the neck of the carboy though, matter of fact there's probably 6-8 inches of air between below the stopper. Will this be ok, or should I be topping it off with something if it's not too late already?
Doesn't matter in the primary, the CO2 will push out all the O2, so carboy size doesn't really matter.
If you transfer to secondary, though, you'll want something with less headspace, since there won't be any real CO2 production.