Mini Hearth, Bifurcated (Grey 712) Fortress we recommend the use of

we recommend the use of a black light when "charging" your formicarium before turning off the lights

Red Interior color (+10)

Some possible benefits over standard test tubes:

Lid vents are covered in micro-fine stainless steel mesh screening

Mini Hearth, Bifurcated (Grey 712) Fortress we recommend the use ofReady for Immediate Shipping, this Mini Hearth comes as shown in the photo accompanying this product. ****Bifurcated Mini Hearth 2 levels This is optimal for tiny and small ants, SOME medium ants as well. Not recommended for larger ant species such as Camponotus pennsylvanicus or Camponotus castaneus.**** This is a large area for a colony of tiny or small ants. The extra level will be appreciated in terms of living space for a growing, small colony.