Hi, i have had a hive or 2 for a few years now, but unfortunately I lost both hives over winter. I installed 2 new packages on Monday on drawn comb that i had from last year. I opened the hives today to see how things are going, and they look quite crowded. My question is when should i add another brood box, because all the frames are drawn out, but the population will decrease for a few weeks. When starting with no drawn comb i can find plenty of advice on when to add second brood box, but cannot find any on when to add second box when starting on drawn comb, oh I almost forgot I am using mediums (eventually 3) for my brood boxes. Thank you in advance for any advice or suggestions.
Keith