3/8" x 4" to 3/8" to 8" entrance reducer.What are you using (how big?) - for an entrance hole and where is it placed. Also what are you using for insulation on the sides and are you leaving it on in the summer?
Clong - "All insulation stays on all year long." Can you offer any observations, positive and negative experiences?
My casual observation of a poly-nuc is it is a poor moisture buffer and collects water. I also see extra vent holes, front and rear for this type of design (had closed rear but soon opened it). But heat / temeprature control increases brood rearing significantly. I am building wood nucs with glued on XPS foam insulation.
Here's a good example of what I am talking about. The previous photo (above) is of a hive with the upper entrance completely closed off after having it partially open most of the winter.For my part (as previously noted) I run top and bottom entrances on all hives and the bees respond by laying down propolis in varying degrees to the upper entrance in preparation for colder weather (example photos attached) and seem to be continually monkeying with the opening size (with no discernible pattern) throughout the winter.
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