[header] How to take care of your new leopard gecko [title] Get the right environment. [step] A leopard gecko does great in 10-20 gallon (37.9-75.7 l) tanks pretty much all of their life. Options are an aquarium, terrarium, or vivarium. 
It is a common misconception that leopard geckos come from dry, arid deserts, so people often use sand. It is recommended that leopard geckos have either dry eco earth, reptile carpet, or textured tile lined at the bottom of their enclosure.