Section-based housing in a vivid yellow format

ANTMART Grid Yellow 200x200 Variant A combines a grid-style chamber system, a bright yellow body, and partial G-23 gypsum coverage in the nesting area. The enclosure is designed to develop with the colony: a young family does not need immediate access to the entire nest, and moisture can be supplied separately to different sections.

PETG body and nylon assembly

The main structural components are made from PETG. This plastic is suitable for parts exposed to moisture during the formicarium’s intended use and is designed to retain its geometry. White nylon fasteners hold the components together. Unlike ordinary steel screws, nylon does not rust in a humid nest or leave corrosion products on the gypsum inserts.

Five sections for staged expansion

The nesting module is divided into 5 self-contained living sections with removable dividers. Only the space required by a small colony needs to be opened at first. As worker numbers rise and the available chambers become occupied, further sections can be connected one at a time. Staged expansion keeps the early nesting area compact and makes it easier to observe how the ants organize the space.

Five separate hydration areas

The formicarium incorporates 5 hydration zones, allowing water to be supplied to different parts of the nest. This creates sections with differing moisture levels rather than forcing the entire colony into one uniform environment. A 6 mm layer of high-strength G-23 gypsum holds and distributes moisture. Because Variant A uses gypsum across only part of the living area, dry chambers remain available alongside the hydrated ones. The ants can move larvae, cocoons, and stores between these areas as their requirements change.

Technical configuration:

• enclosure format: 200x200 mm;
• 5 self-contained nesting sections;
• removable dividers for staged expansion;
• 5 separate hydration zones;
• partial G-23 gypsum coverage;
• 6 mm gypsum layer;
• 15 mm usable chamber height;
• 80 mm-high arena;
• PETG structural components;
• white nylon fasteners;
• double acrylic lid with mechanical sliders.

Fifteen-millimetre nesting chambers

The living chambers provide 15 mm of usable height. This makes the model relevant to species with comparatively large queens and soldiers that need room to move, turn, and tend brood. Camponotus japonicus and Camponotus fedtschenkoi are named as examples in the source description. Chamber height is not the only selection criterion, however; the current colony size, expected growth, and species-specific behavior should also be considered before introduction.

Feeding and maintenance arena

An 80 mm-high arena provides a separate area for food and routine cleaning. Daily tasks can therefore be carried out without unnecessary interference in the nesting chambers. The top is secured with a double acrylic lid. Its two-layer construction improves resistance to warping caused by changes in humidity, while mechanical sliders retain the lid in its closed position. The lid, joints, sliders, and any applied escape barrier should be checked routinely during maintenance.

What partial gypsum provides

Variant A combines hydrated gypsum sections with chambers that can remain dry. This arrangement is particularly easy to understand for harvester ants: seed stores can be kept away from the wet areas, while the colony can position brood closer to the gypsum when appropriate. It does not establish one universal watering routine. The amount and frequency of hydration must be adjusted to the species, colony size, and the ants’ response to the conditions.

The source compatibility list includes Camponotus nicobarensis, Camponotus pseudoirritans, Camponotus maculatus subnudus, and Myrmicaria brunnea. Messor Structor is also mentioned separately in the source FAQ. When introducing any young colony, the number of open chambers should correspond to the space it can currently occupy rather than its possible future size.

Monitoring the nest

Independent sections and hydration points give the keeper finer control over usable space and water distribution. Useful indicators include the appearance of the gypsum, condensation, brood placement, and the chambers selected by the ants. If a colony consistently avoids one zone, its moisture level should be reviewed in relation to the needs of that species.

Questions and answers

Is Grid Yellow suitable for Messor Structor?
Variant A is listed for this species because it combines partial gypsum coverage with dry storage chambers. Seeds can be kept in sections that are not directly hydrated, while other areas remain available for brood.

Why is the nest divided into five sections?
The sections allow the living space to be expanded gradually. A small colony begins in a compact part of the nest, and additional chambers are opened only after the family grows and occupies the existing area.

Why use nylon rather than steel fasteners?
Ordinary steel may corrode under persistent humid conditions. Nylon does not rust and will not deposit oxidation products on the gypsum.

What does the double lid contribute?
Two acrylic layers make the upper closure more resistant to bending. Mechanical sliders hold it closed, but all escape-prevention components still require regular inspection during feeding and cleaning.