A possible issue has come to mind.
I have been taught and have been practicing rotating old brood frames from the brood box to center of the honey super. This is to get the old black wax out, which usually has smaller sized cells which affect the size of the bees. (The cocoon they make gets incorporated into the cell each generation.)
It is also a preventative, in case the wax harbors disease. The remaining frames of brood are moved together and a sticky is put on the outer edge of the brood. (This also can help prevent swarming, as it gives more room for the queen to lay.)
If one has a standard Flow Hive, then there is nowhere to put the normal Langstroth frame with the brood, in the super. This is OK if you have other standard hives, but not if the Flow Hive is your only hive. The remedy is to get a hybrid super.
I suggest that having a hybrid super is recommended to all new bee-keepers for whom the Flow Hive is their only hive.