Hi there, Just joined here as starting out with homebrew. I'm in the UK so forgive my metric measurements! Just about to do my first brew - BIAB in a Peco/Electrim Boiler.; a Hoppy American Pale ale I have enough grain to make 23l/c.6 gallons that came with a kit but wanted to make a smaller batch to begin with, say 12l/c. 3 gallons. My issue is that i only have a 28l fermentation vessel so if i did this, there'd be a lot of headspace in there. Is this a huge issue? I don't plan on dry hopping and the fermenter has a tap for taking gravity readings etc. but obviously i want as little exposure to oxygen as possible. Any thoughts/advice? Thanks!