I created three different Cell builders using various setups. These are from a large colony (4 deeps) which I broke down into 3 nucs and left a single deep in the original position. I placed 8 frames of honey and pollen and one frame of brood along with the cell bars. Most if not all the foragers returned to the original hive position creating a very strong cell builder. These are by far the most well fed cells I have produced yet. The other two cell builders had nicely fed cells but they were at least 3/8" to 1/4" shorter then the cells in the pictures. Take notice to the large amount of royal jelly in the jzbz cell. These pictures were taken at day 11, so the queen is in the pupae stage.