Mini Hearth Type III (Grey 611) keeping ants I would recommend a medium

I would recommend a medium sized nest for them because the chambers and tunnels for the Pioneer are larger on average than some of our other nests

2 4"x5" (100mm x 125mm) nest sections (expandable using removable plug)

Honeycomb carving pattern (all interior chambers connect)

XL Mini Hearth (+10)

Large Water Tower™

Mini Hearth Type III (Grey 611) keeping ants I would recommend a mediumThe 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