These are some pics of my Ob Hive setup.
This was started from a frame of bees/brood with laying queen. I added the second frame immediatly. I am always feeding them sugar water from the top.
The tube inside goes to through the wall; the outside tube is open at the bottom and also at the top. Some go in/out the top and some go in/out the bottom. I did this so that in the winter when the bottom might be covered in snow, they can still get out for a cleansing flight.
From what I read, it is unlikely they will survice the winter in the ObHive, but I'm gonna give it a try.
they are now drawing out the top frame.
The tube from the hive to the outside wall, about 1 foot. 1" tubing and some plastice PVC piping.
Outsite, about 6 feet of tubing.