I've got a few hives that are really going nuts- they're comprised of 2 deeps (second deeps added 2 weeks ago and they're 90% drawn) and a shallow super full of honey. I just added medium supers and in no time at all they were full of bees. It will be drawn in no time at the rate their going.
These hives are obviously going to be big honey producers, which is what I want.. if they don't swarm (which is a tendancy with Carniolans I'm told). Is it too late in the season (Maine) to split them and still expect full-sized hives by early fall?