OK so my curiosity has been peaked by this fermenter and oxygen free brewing. Having just invested in corny kegs I am now seriously on the way to pushing the button and ordering one but would like to gauge opinion on a couple of points. So is oxygen free brewing really the dogs nuts and the max volume is said to be 22L has anybody done more in it? All my fermentation is done in a fridge so the fact it is clear is not an issue. I know they do a much larger one but that is too big. If I could get 23.5 L into it without over flow I would be happier. So I could do my normal batch size and dump trub, harvest yeast and take gravity samples and still get 22L out?