Well, my beef about racks and lights is the looks. Yeah may grow plants nice, but when I think of terraruim I;m going for looks. Just so happens that the plants also have to be cared for too. There is a terreium supply company that has dirrections on how to build a living vivarium. Realy good pictorial directions. I think something like this would work. I don't want to give a link to it since they also sell CPs and things too.