Nucleus (BF)(Beige 3888) Founding formicaria 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

Click here for more information on the Pioneer Formicarium

A special coating on the interior (ant safe) makes this formicarium illuminate when lights are turned off

Black Exterior/Sand Interior

Please include color choice and decor choice in comments box when checking out

Nucleus (BF)(Beige 3888) Founding formicaria the Atrium is larger (inThis is a Black Friday Cyber Monday 2025 Formicarium For more information on the Nucleus III click here. If you are ordering the product on this page you will receive the formicarium shown in the photos along with any options you choose Includes Nucleus III formicarium and all accessories. The Nucleus III is our proprietary Type III material Optional Museum Glass Optional Removable Vent (Lid on a lid, exposes a 1" opening) 3 Water Towers for long term