The two-chamber Black minimodule provides temporary housing for an ant queen and a developing starter colony. Its compact body combines two nesting chambers with a continuous gypsum base, an auto-hydration system and a micro-arena for feeding. This structured layout gives a young family separate internal areas while allowing the keeper to perform routine tasks without repeatedly working directly around the queen and brood.

Two chambers for the colony’s early stage

The nesting section is divided into two roomy chambers. A solid casting of G23 medical gypsum, 10 mm thick, covers the complete floor area of both. The available height above the gypsum is 15 mm, while the section without gypsum has a height of 25 mm. The overall dimensions of the minimodule are 50x180 mm.

The model is intended for a queen or an initial family that does not yet need a full-size formicarium. Two chambers give the ants an opportunity to distribute the queen, brood and workers across separate parts of the nest. The colony itself determines how those spaces are used, so the keeper should assess capacity through observation and move the family once it requires a larger enclosure.

Feeding in the micro-arena

Syrup and protein food can be offered in the dedicated micro-arena without opening the nesting chambers for each feeding. Compared with access through a narrow test tube, this arrangement simplifies regular food delivery and the removal of leftovers. It also reduces the number of direct interventions in the space occupied by the queen and brood.

The arena does not replace normal husbandry. Food type and quantity must suit the particular ants, and uneaten material should be removed in good time. When the family becomes too large for the starter unit, it can be transferred into a more spacious gypsum or partly gypsum ant farm.

G23 gypsum across both chambers

The continuous gypsum casting extends over the entire living area in both chambers. Porous gypsum accepts water from the auto-hydration system and moves it through the material, creating a moisture gradient rather than one isolated wet point. The design is primarily aimed at moisture-loving ants. Examples include Lasius niger, Myrmica and large tropical Camponotus.

Those examples should not be read as universal compatibility guidance. Moisture requirements vary between species and colonies, including ants within broadly moisture-loving groups. Auto-hydration makes water management more convenient, but it does not measure the correct amount on the keeper’s behalf. Repeated overfilling can oversaturate the gypsum and may contribute to mould. The chambers must be inspected, and water input should be adjusted to actual conditions.

A different layout from a test-tube incubator

A typical test-tube setup stores water behind a cotton plug. Changes in room temperature may result in condensation on the glass, and persistently damp cotton can gradually darken, become contaminated and develop mould. The narrow opening can also make frequent feeding and cleaning awkward.

In this minimodule, the moisture-bearing nest and feeding area perform separate roles. The gypsum serves both chambers, while the accessible micro-arena receives food. This division improves access and makes the colony easier to observe, but the enclosure is not maintenance-free. The keeper must monitor water, remove waste, inspect the gypsum, confirm that the lid is seated and watch the ants’ behaviour.

Acrylic, PETG and secure assembly

The body is constructed from 3 mm transparent acrylic and black PETG plastic. The clear parts provide a view into both nesting chambers. Metal bolts hold the principal layers together, and nylon components are used in the arena.

Sliding catches provide additional retention for the lid. They reduce the possibility of it shifting during cleaning, carrying or an accidental inversion of the module. They are a supporting safety feature rather than a substitute for inspection. Before transport, the catches, bolt tension, lid position and all connection points should be checked by the keeper.

Construction details

• Layout: two nesting chambers and one micro-arena.
• Overall size: 50x180 mm.
• Nesting base: solid G23 medical gypsum across both chambers.
• Gypsum thickness: 10 mm.
• Internal height above the gypsum: 15 mm.
• Height in the section without gypsum: 25 mm.
• Body materials: 3 mm transparent acrylic and black PETG plastic.
• Main fasteners: metal; arena elements: nylon.
• Equipment: auto-hydration system and protective lid catches.

Questions and answers

What is the purpose of two hydrated chambers?

They create a divided nesting area for a young family, while the continuous gypsum carries moisture through both sections. The ants decide how to distribute themselves, their brood and the queen within the available space.

Can the colony be fed without opening its nesting area?

Yes. Syrup and protein food can be placed in the separate micro-arena, which also makes leftover food easier to reach and remove.

Which ants is this layout intended for?

It is directed towards moisture-loving species. Lasius niger, Myrmica and large tropical Camponotus are examples. The requirements of the exact species should be checked before occupation.

Can mould still appear on the gypsum?

Yes. Excess water and organic contamination can create conditions in which mould develops. Hydration should be controlled, and both the nesting chambers and arena require regular inspection.

Do the lid catches completely prevent escape?

They add retention and reduce the risk of accidental opening. Reliable containment also depends on correct assembly, closed connection points, an undamaged enclosure and a manual check by the keeper.