This is how I created an arid bioactive enclosure for a hatchling Leopard Gecko. I used a front opening ZooMed 25 gallon (30x12x16”). Add drainage layer consisting of pumice and sand. Lay down arid bioactive substrate mix (60% tropical mix & 40% excavator clay). The hardscape is flagstone corkbark and grapevine. Plants used: Haworthia, Earth Star Bromeliad, Echeveria, sansiveria, jade. Dwarf purple isopods and springtails are the clean up crew. Lighting is an Arcadia Jungle Dawn LED. Heating Arc