Is There A Minimum Percentage That A Fermenter Should Be Full?

[pablopblo]

Is there a mimimum percentage of the total capacity of a fermenter that should be full when brewing?

would it be okay to make a small brew only utilizing 30% of the total capacity?
I've read that yeast diplicates until there is no more available oxygen, would this affect the brew negatively?

any information would help

-Thanks.

 

[jbumpstead]

Won't be a problem. You will still lose around the same amount of beer to trub/fermenter losses meaning the percentage lost will be higher than if you did a full batch size but other than that no worries.

Cheers,
Justin.