Only suggestion I have is get ready to buy a queen. I have never found a better way to kill a good hive than removing all or most of the swarm cells. They make several because they know success is not 100%.
Ok, yesterday, I see a swarm in the air which landed in the trees. I noticed one box had a lot more activity than other boxes. Later, I see less bees hanging out on the front. Today, I go in and see less bees and find multiple capped queen cells with about three that had hatched out. 10 days ago, I had checked on them and they still had several frames of space available, of which they still do. This hive, with queen, just happened to come from the mentioned one I had split off before. It's almost like they planned on swarming and swarm they did.
So, what is happening, what is going to happen here. Multiple capped cells, several hatched. Is this a case where I should have removed all but one, or are they waiting to make sure the virgin queen comes back mated and will see that the rest are destroyed? Have multiple swarms already left with the multiple hatched cells?