I have placed an empty shallow supper chamber below deep brood chamber. That is part of preparing the hive for the winter. I have read that it is good for the bees to have a pillow of air below brood chamber so first they can form winter cluster lower, second for the better air circulation (CO2 goes down), and third to protect bee cluster from cold wind gusts that would get inside the hive thru the entrance.
Is that 7 inches of empty space below brood nest too much or fine?
Is that 7 inches of empty space below brood nest too much or fine?