
Brood are stacked to the the ceiling.
So, I added a sand nest like this: 20 by 20cm thinking they would move in. But, jokes on me, they just spread... and now both are full.

To be honest, although the "traditional" glass panel farm looks good, and they seem to enjoy digging... it's not very spacious...
So, as diapause creeps up I have this sprawling setup and ants that are crazy and like to sting and bite. I think I can just fit the whole thing in the fridge...
But, I know I need to find them a much bigger nest. Any recommendations? Do any of you have a massive Pogonomyrmex colony, how do you keep them?