So last year as an experiment I bought some cheap formicaria off the internet. One was a Tar Heels mini hearth ripoff and another had an interesting multi-chamber glass tube attached to a plastic outworld.
Fake mini hearth issues: (1) No nestmates for hydration. (2) Wimpy magnets, so the outworld would come off when lifting it up. (3) Paint peeled off. I have no idea if this thing contributed to the issues my C. sansabeanus are having, but they certainly have not been doing well. I moved them out into a different cheap starter formicarium with more access to water, but they still aren't exactly thriving.
Glass tube attached to plastic outworld: (1) Gaps in the outworld construction. I filled many of the gaps with glue but apparently it wasn't enough when housing small ants. (2) Too much loose sand - if you scratch the substrate it just releases more sand. I used this thing to house Tetramorium and they collected sand and completely coated the inside of the glass tube, and (3) there's no way to clean it. The tube has 3 chambers, including a back portion that can be refilled with water - good in theory - but the inability to clean the second chamber (the ants' favorite hangout) was a huge minus. But the outworld gaps were the final straw today when I found them visiting the C. sansabeanus next door (yeah the C. sansabeanus set up has gaps, too).
I had tried to encourage them to move out into a (real) mini hearth before, but this time I'd had enough. I found tubing that fit the glass tube, whacked the tube until a bunch of ants, brood, and queen fell out of the inner chamber and into the outer chamber, then tapped them into the tubing, and am now letting them slowly figure out they HAVE to move into a real Tar Heels mini hearth. I left a few ants and brood behind but hopefully I'll be able to rescue them at some point.
By the way, I also got a couple different brands of 3D printed formicaria at the same time. They are much better quality but also are hard to clean with active occupants. For the immediate future, it's gonna be all Tar Heels for me once they grow out of their test tubes. (Aside from the ants living in dirt/substrate.)
Edited by OhNoNotAgain, January 13 2020 - 1:44 PM.