=FF I was wondering why many b-kprs use two brood chambers? Before I started keeping bees, I read most of the books available in the local library. One that impressed me was by Aebi, who held the Guiness world record at I believe over 600 pounds from one hive, and all above one BC. To overwinter, I just leave on a full super of=20 honey. My bees seem to overwinter OK and they produce a nice amount of honey for me. Am I missing something? =20 I am in Prince Edward Island, Canada and we are still mite free. Harvey Hyde [log in to unmask]