I am wondering if it is ok to use a 6 gallon bucket for a one gallon cherry wine recipe during primary fermentation ONLY. After 5 days I plan to transfer the batch to a 1 gallon glass carboy for secondary. I believe the oxidation process does not kick in during primary and the yeast needs the oxygen at this time so I believe i should be ok, but 5 gallons of headspace has me worried a bit.