Newbie here..so added second box a week ago to 19 day old package that had drawn out most of the 8 frames out of ten. things were starting to blossom well here in VT, so went and added it about 5 days ago. Checked today and they had just started to coat some of the frames in the 2nd BB and most of the bees were in the bottom. Using black foundation from MannLake different from original..should I be concerned? Did I add to early? I saw some new bees so maybe things will take off? Also how do you tell comb with larvae that is being used first time vs 2nd time?