We had a nice warm autumn day here in Melbourne so I decided to have a look in the super and also remove the queen Excluder. The plan was to leave the super on over winter. The super is about 25% full of honey while the brood box was completely full of brood and honey, when I checked about a month ago.
I removed the roof and then the lid and noticed there is some mould on the underside of the lid. There is also a little bit on the cables running across the top of the flow frames but the rest of the flow frames are mould free.
Is this a concern. See attached pic.
I have a flow hive classic with the bottom vent completely shut. The entrance is fully opened but I had planned on closing it up a bit for winter. Should I open the vent to help the hive air out or leave the bees to manage it.
I have flipped the lid so the mouldy side is now facing up and am letting the roof sit in the sun. I’ll put it back on later this afternoon when it starts cooling down.