That depends on temperature especially night time temp. Cooler temperatures make a strong argument for putting the empty between the cold ground and the cluster. Bees in nature normally work down when establishing a new nest. Since first year queens and colonies do not tend to swarm unless crowded, there is not downside to adding the second brood box underneath. I advise whether adding your second box up or down you move a drawn frame with some wet brood to the middle of the added box. The bees will feel the need to fix their brood nest and will start working in this strange new area. Please do not inflict on your new colony the un natural chilling appliance called a screened bottom board! Bees need to maximize available heat to rapidly build their new nest. Bees often will not work in the bottom box of a hive placed over one. No matter where you choose to put your second, reduce your bees entrance to better enable them to defend and climate control their space.So I start with one deep but once I need to expand do I add the new deep on the bottom or on top?
best answer "it depends"So I start with one deep but once I need to expand do I add the new deep on the bottom or on top?