Cheers! ok, so a few days ago I racked my 5 gal batch into a secondary(5gal glass carboy with airlock) and have waaay too much headspace. Probably a half gallon or more. Now the mead is still fermenting slightly it seems, as the airlock still bubble every few minutes. How worried should I be of oxidation at this point? Should I go ahead and maybe purchase a smaller carboy, or maybe food safe marbles to fill the space? Or will this be ok as long as I bottle once fermentation is totally done?