Nucleus Type III (Brown 2055) ready to ship formicarium the Atrium is larger (in

the Atrium is larger (in terms of available nest space) than the Casita and would be in between the Casita and Nucleus III in terms of nest space

Modular formicarium features one XL Mini Hearth

After Arrival

Optional Foraging Area Placement Side or Top Positioned (drop-down menu)- Please note that side foraging areas do have one wall up to the top of the lid

XL Nest Size - 4 5/8" x 1 13/16 x 1 3/4"

Nucleus Type III (Brown 2055) ready to ship formicarium the Atrium is larger (in***Please visit our Main Nucleus Type III Page here*** Includes Nucleus III formicarium and all accssories. The Nucleus III is made out of our proprietary Type III material Option Museum Glass Option Removable Vent (Lid on a lid, exposes a 1" opening) 3 Water Towers for long term hydration 2 Nestmates for drinking water inside the nest area (Included at no additional charge for this formicarium)($10 Value) one 3 8" connection port ***Copyright 2025