I am going to try a couple firsts for my next batch. One will be my first time brewing a lager. Second will be my first time brewing with a carboy as my primary. The one carboy I own is a 6 gal glass one. It would probably be ok without an airlock, but I want to be careful. So, for my blowoff I plan to use my 3 piece airlock with a smaller tube. So, does anyone know what size of vinyl tube works for this application? Also, does anyone have any great ideas of how to keep the other end of the tube in a bucket?