I have recently stumbled upon this article and it has given me so many ideas. I now want to use this styrofoam technique to create a crazy fishtank. none of this rocks, or natural shrubs business. I am thinking of the batcave, the fortress of solitude, porhaps even some crazy blue mountains with scenerary that screams japanese. I don't know, but I ask for your ideas so I can make this the best fish tank ever!