I started my first nuc two weeks ago. I added a queen cell that was hatched by day 4. I kept an entrance feeder on it with only about a square inch opening left for the bees. I opened the nuc yesterday to find it full of maggots. I am concerned that I was not careful enough to get a good amount of emerging brood when I made the split. Since there were obviously not enough bees to fight off the flies....thats the way I'm leaning. Could the entrance feeder have helped in my demise? Any advice on how to prevent this next time would be greatly appreciated.