I just added a tunze nano wavebox to my 80g acrylic tank and thought i'd share a video of it in action that i took a few days back. heres a link to it. theres some closeups about half way into the video. all and all im really impressed with the water this wavebox moves, anyone thinking that the nano might be too small for a 4ft tank should check this out.
http://www.youtube.com/watch?v=NBXwxboaIaQ&hd=1
http://www.youtube.com/watch?v=NBXwxboaIaQ&hd=1