Atrium (Brown 4163) Fast formicaria and magnetically removable tops and

and magnetically removable tops and glass (nest area)

Acrylic top (glass top optional - see photo)

Stainless steel micro mesh vents

If you do not we will make one the same color as your package formicarium

Atrium (Brown 4163) Fast formicaria and magnetically removable tops andSee More Information About the Atrium at this link. General Information: *****Due to the size of the open chambers, this formicarium is considered a small to medium sized formicarium and can hold an estimated 1,000 to 2,000 medium sized ants, larger species such as Camponotus, Formica and Myrmecocystus up to 1,000 (again, approximately). While it is quite possible some small species (Lasius spp.) will do quite well in the Atrium, estimating numbers