90 percent of our hives are setup with a deep and a medium box for the brood section.We have a couple of hives that are three mediums deep. It makes it easier to make splits or to beef up another hive. It's nice to know using mediums could possibly help with swarming. we also use the medium boxes because of the weight factor , due to bad backs. Thanks for the info. Bob God Bless You Robert&Teresa Butcher [log in to unmask] ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]