Are they filling the super

[Faroe]

Looks like they are sealing all the gaps with wax:

You may want to have a look at this thread for info on how to encourage the bees to use the Flow Frames quicker.

How to encourage bees to fill the Flow Frames

Just thought I would share this FAQ in case you have some bees who are not taking to the Flow Frames too quickly. http://www.honeyflow.com/faqs/why-arent-my-bees-filling-the-flow-frames/p/194 Why aren’t my bees filling the Flow™ Frames? In: Frequently Asked Questions There could be many reasons why the bees aren’t filling the Flow™ Frames. The two main things we have found that increase the rate at which bees fill the frames for the first time are: Lots of bees on the Flow Frames. This i…