Originally Posted by tpbc
I believe that brett and lacto don't need O2, Not sure on that though.... One of my beers is a Berliner weisse. I'm hoping that the Lacto doesn't need it and I can transfer... I also toyed with the Idea of taking the intake ball valve off my keg and putting an airlock on it, and using it as I would a carboy. However I will loose the ability to push beer out the output for sampling. I suppose I could just open the top, but then I'm exposing it.
Brett needs some O2, but lacto and pedio are microaerobic/faculative anaerobes. That all means that a tiny bit of oxygen is used but high levels stunts their growth. You can grow pedio/lacto on anaerobic plates but it grows very poorly if at all.
So longer term aging in the keg will be good. I'd just throw some oak cubes in there depending on what the beer is so the brett can metabolize some of the cellubiose sugars in the wood. It's a valuable food resource for them during a very long term fermentation.