How Big is Big?
Once a colony reaches 8-frames in size of brood frames with the comb drawn out it marks time for adding a super chamber to the hive set up. Not before.
The workforce has reached a population level where it has swung from focusing on building and nursing to one that is now investing the majority of its resources on foraging. Nursing and building continue however the ratio for such duties drops in relation to the overall distribution of workforce usage.
Once the brood chamber has 10-frames full of comb and a constant turnover of eggs, larvae and emerging worker bees, the colony is best suited to take advantage of available forage. It can only do so up until this point and beyond if there is enough food to sustain the time line.
When there is a strong nectar flow, the colony can now support additional super chambers being added to the hive complex. In the days before the Capensis threat in South Africa, hives stood as tall as a person and potentially more so with 6, 7 and even 8 supers to a colony. (Capensis threatens the Scutellata sister species as a pest however may still enjoy these types of numbers when it comes to farming them in the Western Cape Province.)
I've spoken at length assuming all of you reading this are using Langstroth bee hives. In fact, a good deal may be using KTBs (Kenyan Top Bar hives) in which case the same type of numbers work well. You may want to have at least 10-frames of KTBs style before considering the full production level of that colony.
Bees will still store excess honey even within the first frame. However, in order to provide excess stores for beekeepers to harvest one should not harvest within the building time frame as described above. It will dampen the overall output over time for your colony.
Adding a super chamber or for KTBs, exposing more available frames, can take place once the current super chamber's frames have been drawn out and filled to about 8-frames. It is good practice to have at least one spare super chamber to each hive in your apiary. This allows for you to swap out a full super chamber with an empty one while harvesting takes place. If you do not do this, you will encourage swarming and lose a good deal of your production workforce, not to mention additional honey production.
How you harvest has a massive impact on your overall production too. We reveal why in a later part of this series...