As a rule of thumb, the advice to wait 30 days is a good one.  More accurate
is 25 days, as has been said.  It is not unusual for me to twice set up 50
nucs a day for 2 days (about 30 days apart).  I am absolute about not
looking until two weeks have elasped, and even then I only lift a frame high
enough to see eggs/larvae and when I see them I put the frame back down.  If
I don't see eggs/larvae I will lift the next frame, etc.

But I prefer to not do even that and if entrance activity looks normal I
leave them for a month.  At approximately 30 days I will lift the center
frame and inspect both sides.  Then I will go to end frames to be sure queen
has enough room and there is enough food.  If not, I take corrective action.

Lloyd

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