Recently pieced together a Tunze 6055 and am wondering how to take advantage of its controllability. I've considered building a nanowavebox but with an older tank I'm conerned the seams may not be strong enough. I've read (somewhere) that these pumps can still generate waves without the box. But I've not heard how this is done. So, how can I make waves with this pump if I don't have a wavebox and will these "waves" also have the potental to break my tank?