These are really cool plants. You can purchase them at online at http://www.rhapisgardens.com/catalog/ming-list.htm, or you can almost always find them at Home Depot or a gardening center which carries houseplants. They are relatively slow growing and love high humidity and bright filtered light. The plant should be placed in a location where the soil can dry out between waterings. Too much water and they yellow and shed their leaves. I haven't tried one in a vivarium, but I would imagine they would do very well.