White powdery substance on combs and frames

[71Corvette]

This afternoon during a hive inspection I noticed what looked like a white powdery substance on many of the frames and capped honey in my two hives - almost looks like a mildew of sorts. It's pretty tightly adhered to the frames and comb and really doesn't come off. Otherwise the hives seemed pretty healthy. The last time I was in the hives was about a month ago and, at that time, I saw no sign of this substance.

I've been feeding the bees 2:1 sugar syrup with fumagillan and honey-b-healthy for the past two weeks. Perhaps what I'm seeing is just some residue?

I just want to make sure this isn't some sort of issue that requires treatment.

Thanks

[Michael Palmer]

Look up "Bloom" in your bee books.

[71Corvette]

Thanks, I looked up beeswax bloom in my texts and think that may be it. It's a bit strange the bloom was on the frames too, but I suppose there was probably beeswax residue on those.

We're due for another mite treatment next week. If it's still there and temperatures permit I'll try to snap a few pictures.