The single-chamber Black minimodule is starter housing for a queen and a small developing colony. G23 gypsum occupies one half of the living chamber, while the other half remains free of the insert. This creates humid and dry sections within a compact nest, and the built-in micro arena provides a separate place for feeding and basic maintenance.

Two functional areas in one chamber

The 10 mm gypsum layer covers exactly half of the chamber. When moistened in moderation, it forms an area where ants can place larvae and other brood requiring more humidity. The dry PETG section can be used for pupae or stores of seeds and other food appropriate to the species.

This arrangement is intended especially for less moisture-dependent ants that need a choice rather than uniform humidity throughout the nest. The colony can distribute brood and supplies between the two surfaces as conditions change. Clearance above the gypsum is 15 mm, and the section without gypsum has a height of 25 mm.

Feeding away from the living area

In a conventional test tube, food is introduced close to the queen and brood. The cotton plug must be removed for access, giving active workers an opportunity to reach the open end. Condensation on the glass and ageing damp cotton create further maintenance issues, and contaminated cotton may eventually develop mould.

The micro arena separates the feeding point from the main chamber. Food can be placed, monitored and removed there while causing less disturbance inside the nest. This is useful for active species and when liquid food is offered. The layout makes routine work more structured, although careful handling remains necessary whenever the arena is opened.

Construction and visibility

The black base is made from impact-resistant PETG plastic. Transparent components use 3 mm acrylic, allowing the colony and chamber conditions to be observed. Metal bolts secure the main body, while nylon bolts are fitted in the micro-arena area.

Locking slides hold the lid in position and help reduce accidental opening when the module is moved, cleaned or overturned. Before handling or transport, check that every slide is fully engaged and that none of the fasteners has loosened.

Model details

• Layout: one living chamber with a built-in micro arena.
• Overall size: 50×180 mm.
• Gypsum: G23, 10 mm thick, covering half of the chamber.
• Clearance above gypsum: 15 mm.
• Height without gypsum: 25 mm.
• Materials: 3 mm clear acrylic and PETG plastic.
• Main fasteners: metal.
• Micro-arena fasteners: nylon.
• Lid system: locking slides.

Moisture management and growth

The moisture gradient depends on controlled watering. Add water to the gypsum in small amounts and observe the chamber before adding more. If the module is repeatedly over-watered, even the gypsum surface may eventually develop mould. Food remains should be cleared away and both the living and feeding areas inspected regularly.

This minimodule is designed for the early stage of colony development, so its available area is limited. As worker numbers increase, the family will need to be transferred to a larger ant farm. The next formicarium should be selected according to colony size, species-specific behaviour and moisture requirements.

Common questions

Why does gypsum cover only half of the chamber?

The partial insert produces two different surfaces inside one space: a humidifiable gypsum section and a dry plastic section. Brood can be kept near moisture, while pupae and food stores can remain dry. The ants decide how to use each area.

Does the module eliminate condensation and mould?

No. It makes the separation and observation of humid and dry areas easier than in a test tube, but care still determines the outcome. Excess water and neglected food can cause poor conditions, so both moisture and cleanliness must be monitored.

Can active ants be fed through the micro arena?

Yes. The arena is intended to keep feeding activity outside the living chamber and reduce disturbance to the queen and brood. Workers must still be watched closely, and the lid and slides should be closed immediately after maintenance.

Is the module suitable for transport?

The slides help secure the lid, but the complete assembly should be inspected before a journey. Avoid loose excess water, handle the unit carefully and maintain temperature and other conditions appropriate for the species being transported.