I'm about to transfer to secondary for lagering on my second ever lager (currently starting diactyl rest). I'm going to be transfering to demijohns, with air locks. I'm just wondering about the headroom at the top of the neck.
In my cider productions, when racking to secondary after fermentation, that air at the top of the next has caused me problems with film yeasts, such that I now add a bit of sugar to generate some CO2 to push it out. That would seem to be a bad idea with a clear lager. On the flip-side the lagering temperature will be so low that I doubt any undesirables could grow, and presumably there isn't really much air there to do much in the way of oxidation.
If anyone has any advice / tips i'd be most grateful
In my cider productions, when racking to secondary after fermentation, that air at the top of the next has caused me problems with film yeasts, such that I now add a bit of sugar to generate some CO2 to push it out. That would seem to be a bad idea with a clear lager. On the flip-side the lagering temperature will be so low that I doubt any undesirables could grow, and presumably there isn't really much air there to do much in the way of oxidation.
If anyone has any advice / tips i'd be most grateful
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