An enclosure capable of supporting one or more phyla of living plants and organisms includes various panels that form the enclosure along with at one front door panel movable to provide access to the interior of the enclosure. A water inlet port is arranged in the top assembly. A drainage system is located on the bottom of the enclosure includes a sloped drainage panel, a sump, and a drain tube. The enclosure further includes an air circulation and ventilation system having the upper vent screen and a lower vent screen separable by a circulation distance that generates a chimney effect within the enclosure. The enclosure may also include a microfauna trough on top of the drainage panel.