A Wavebox (or a wave generated by other means) will increase the stress on the seams of an aquarium. With a relatively new, professionally assembled aquarium, sitting on a level and solid stand, this extra stress is not cause for concern. If however the tank is over ten years old, has been moved many times, was poorly constructed or sits on a less-than-perfect stand, then the wave could prove to be the straw that break's the camel's back.
That said, tank failures directly attributable to a Wavebox are very rare, and most of the cases I've heard about involved DIY aquariums.