6 easy steps to build a DIY waterfall in your terrarium Put water pu. Here are 6 easy steps to build a DIY waterfall in your terrarium Put water pu. Here are 6 easy steps to build a DIY waterfall in your terrarium Put water pu. Reptile Habitat, Reptile Room, Reptile Cage, Reptile Enclosure, Planted Aquarium, Aquarium Fish, Terrarium Cameleon, Dendrobates Terrarium, Aquascaping