Mini Hearth XL (Brown 9320) Immediate Shipping Formicaria 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

Removable vent optional

Decor -  Canyon Ledge (+5)

White Sand Interior/ Black Exterior

This is also a higher clarity than standard foraging area materials

Mini Hearth XL (Brown 9320) Immediate Shipping Formicaria I would recommend a mediumReady for Immediate Shipping, this Mini Hearth XL comes as shown in the photo on this page. ***Modular Design (for more information click this (link)*** ***Please Read Below On Pairing This Mini Hearth With Your Ant Bundle*** Nestmates For more information on this feature, watch this video XL 30% larger formicarium than standard Mini Hearth Foraging Area Dcor (as seen in photo) Museum Glass optional ($8. 99) Included with this purchase is a syringe