The Medium Ytong Nest – Type A is a larger formicarium designed for growing ant colonies that require more nesting space while maintaining stable humidity. It builds on the same proven design as the Small Ytong Nest – Type A, with increased capacity for continued colony development.

This nest features seven straight-shaped chambers carved into a Ytong block, providing an efficient and linear layout that supports brood organization and colony expansion. The porous Ytong material naturally regulates moisture, creating a stable and humid microclimate suitable for many ant species.

Moisture is added through the side-mounted hydration chimney, allowing controlled hydration without disturbing the colony. An escape-proof mesh is embedded into the frame, while a clear acrylic cover secured with screws provides visibility and protection. A red shield is included to reduce light exposure and support natural ant behavior.

This nest is designed to be used only in a vertical position.

Capacity guidelines
Suitable for growing colonies that have outgrown founding and small Ytong nests.

Please note: Ytong is a fragile material by nature. All nests are delivered functional, but minor cosmetic imperfections may occur.

Key features

• Medium Ytong ant nest for growing colonies
• Dimensions: 127 x 111 x 33 mm (H x W x D)
• Seven straight-shaped chambers
• Ytong block for natural moisture regulationSide-mounted hydration chimney
• Escape-proof mesh embedded in the frame
• Clear acrylic cover secured with screws
• Includes red light shield
• Compatible with 10 mm and 15 mm tubing
• Designed for vertical use only