Atrium (Bone 4156) Fortress these boxes are built to

these boxes are built to last longer and be more durable

2 Nestmates (+7

Are they expandable

***Aerie Style Foraging Area With Two Aerial Perches For Feeding Dishes***(+$25)

NOTE: For founding sized colonies

Atrium (Bone 4156) Fortress these boxes are built toSee More Information About the Atrium at this link. ***MQ Box Museum Quality Acrylic Box Scratch resistant, higher clarity, and magnetically removable lid (+65)*** 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).