hola

I want to make a vivarium for my leopard gecko. i have the leopard gecko manual and it said i need at tank at least 48" so im gonna buy a 40 breeder or 50 gallon. i just want to know what i should put in there. i know they come from a rocky area and thats all. can any1 tell me like what kind of substrate or soil recipe to use and if i should any kind of plants or rocks that mke it look more realistic.

thanks again
Big P