Mini Hearth Type III (Grey 563) custom 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

the interior of the nest will GLOW-in-the-dark for up to 5 hours

Large Single Carvern or Two Smaller Caverns per side

Having said this

2 nestmates

Mini Hearth Type III (Grey 563) custom formicaria the Atrium is larger (inThe Mini Hearth formicarium is made for starting queen ants and ant colonies. If you are getting into ant keeping as a hobby, or if you have recently purchased your first queen ant or colony, this formicarium will help you reach you goals of a thriving pet ant colony. ***Ready for Immediate Shipping, this Mini Hearth comes as shown in the photo accompanying this product.*** ***For more information on the Mini Hearth Type III, click the following