Small sized rings that can be put in plastic test tubes.
Acrylic Inserts For 150mm Test Tubes
€0.25Price
Color
Ants like less space. These rings turn your test tube into a mini formicarium. It also provides a much more stable humidity chamber inside the test tube. The queen will also feel safer because of the narrow entrance. A nice added bonus is that the ants will stay inside the little chambers making feeding the colony so much easier and less stressful.
