Just like a cozy city apartment—minus the rent—this compact founding formicarium offers a secure and efficient nesting space for queen ants and small colonies.
 
Designed for founding queens, early-stage colonies, or slow-growing and small species (such as Temnothorax), this tiny formicarium is ideal for the first year or more of colony development. It’s also a smart alternative to a test tube setup.
 
The central chamber features low height and a textured substrate that supports cocoon spinning, improves humidity distribution, and provides a natural-feeling surface.
 
Two internal chambers can be used progressively: start with one side, then expand into the second when needed. This gradual expansion helps stimulate colony growth by maintaining appropriately small nesting areas.
 
Humidity is strongest near the wall adjacent to the hydration chamber and decreases gradually toward the opposite end. The entrance chamber remains drier—free of substrate and away from direct moisture—making it ideal for storing grains or housing adults, while the brood benefits from the more humid zone.
 
Hydration is controlled by how often and how much water is added. This setup accommodates a wide range of species, from dry to humid environments. The system is highly efficient at retaining moisture and only requires small, scheduled refills. Filling the hydration chamber with perlite or vermiculite can further buffer moisture levels—slowing down water transfer and reducing how often you need to refill. (See our Formicarium Hydration Guide.)
 
For fully-claustral species, a 4 cm vinyl tube with a polyester fiber plug is included for adjustable airflow. This plug can be positioned in three different ways, removed, or swapped for cotton to suit your needs. See product photos for configuration examples.
 
When paired with a small outworld, this becomes a compact and highly functional founding setup. Ideal for easy observation and species that benefit from tight, efficient nesting chambers.
 
Optional: add high-transmission red film or a black plastic cover to reduce light exposure.
 
Need a full setup? Check out our founding ant habitat kit—includes “The Apartment” nest, outworld, and accessories to get your colony started right.