fill it with 5 gallons or whatever your target is. measure and mark the keg.
I ferment in 5 gal kegs. I fill a full 5 gal and it come to the weld line at the top where the side and top seam is. there is still 1/2 gal free space for krausen which I find to be plenty. just pop a blow off tube on the gas post.
I ferment in 5 gal kegs. I fill a full 5 gal and it come to the weld line at the top where the side and top seam is. there is still 1/2 gal free space for krausen which I find to be plenty. just pop a blow off tube on the gas post.