Nucleus III (Lime Green 137) keeping ants The Atrium has one 3/8"

The Atrium has one 3/8" and one 1/2" port for expansion as a standard feature (additional ports available upon request)

original design that is not modular

Black Exterior

Large tunnels and chambers - 3 levels

Nucleus III (Lime Green 137) keeping ants The Atrium has one 3/8"***If you are ordering the product on this page you will receive the formicarium shown in the photos along with any options you choose*** *****COMES WITH FREE MINI HEARTH (Please Detail Mini Hearth Options In Comments Box At The End Of Checkout)*** This product ships in 2 3 business days from the time your order is completed. Please allow additional time if you create your own Mini Hearth with options, or select one from the Ready To Ship pages for