With the test tube rack created by antderground, you can keep 10 test tubes in perfect stability.
This makes the rack the best way to have queen ants, since they can also be controlled without having to remove the tube as it is made of transparent material.
The test tube rack is created with red methacrylate, like the covers of the ant nests, it protects them from light so that they can be as relaxed as possible.
