itma
Queen Bee
... so after all, in winter with a board under or instead the mesh and a reduced entrance that will give me a sufficient ventilation as well during the summer with just the OMF and no additional holes. right?
Open mesh - only insert the board (below the mesh) when
- doing (monthly) varroa count
- trying everything to warm up the hive so that they will get on and drawn some foundation
- minimising ventilation during Apiguard treatment
Use the entrance reducer as you see fit - particularly whenever wasps appear to be a problem. Don't worry about it as regards ventilation (except for Apiguard).
It is possible (but not generally accepted) that extra ventilation might be helpful during a heatwave. However, with an open mesh floor, no extra venting is needed - the bees can manage. Only question is whether, during a heatwave, you can help them manage a little more easily, allowing their effort to be spent more productively.
Did you confirm that your National roof has the proper anti-damp venting, as I indicated above?
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