One of the downsides to connecting your nests using long tubes is "ant loitering" some ants like to just hang out in the tubes because they retain a little moisture and it's near everything. This will cause the tubes to get dirty and less attractive... hence my new invention of a "mid tube fan."

Getting ants to do anything is next level. They respond to every change and not in the ways you'd predict. They are sensitive to temp, light levels and air currents in ways that aren't obvious. I just need to find a small enough fan and 3D print a little holder for it. 

I recently cleared out a tube that the cone ants blocked with sand, using ... the legs of dead crickets like rebar to reenforce the structure. They had made this whole barricade to regulate the air flow to the nest (hence I'd never recommend a fan on a nest tube)

I guess building a wall out of cricket legs (as struts) with a sand slurry like concrete... isn't any more strange than those early humans with their bone huts...

though I still find both creepy.