They are gorgeous gerbils Look like they are having a great old munch :lol:
Have you thought about filling up the tank with the substrate so they can build tunnels? Will give them lots more to do and great fun to watch
I have done that before, but it used up soooo much like substrate and it costs to much to keep doing tht but they do build in what they have and theres a log in there to.
Thats a shame it was costing too much. I'm sure they would have benefited from it. They really are beautiful gerbils