Mini Hearth (Aqua Blue 3184) ready to ship formicarium ) will do quite well

) will do quite well in the Atrium

but also less disturbing for your colony when removing and replacing

For medium species nest

gold vermiculite

and quickly

Mini Hearth (Aqua Blue 3184) ready to ship formicarium ) will do quite wellReady for Shipping, this Mini Hearth comes as shown in the photo on this page. Nestmates this Mini Hearth comes with a nestmate ($5 value) (See photo). For more information on this feature, watch this video ). Foraging Area Dcor (as seen in photo) Magnetic Ports for Expansion (Additional Mini Hearths Can be Connected On Each Side) Magnetic Glass Panels (Museum Glass optional) 2 Connection ports on each short side, Nestmate Ports in the back (3 8"