I recently brewed up a beast of an imperial stout but during the 90 minute boil i did i lost some volume and only got about 4 gallons. There is a solid amount of open space in the better bottle im using and im worried about oxidation. Not really worried about it so much in the primary but im not sure if i should use something smaller to bulk age. I spent a lot of money on this one and i wanna make sure its great. I got a OG of 1.120 and after two weeks it was 1.040. Its also thick and damn tasty! I brewed it on the 31st and it's still slowly bubbiling away! Cheers