I had the Wavysea's for a bit. Yeah IIRC they just stopped turning after a power failure.
As far as I could tell, Wavysea and Mocean's are identical. What *maybe* be different is the little motor mounts inside would snap off and then the unit would stop turning (the little motor inside was happily doing it's thing, just not turning the output nozzle). It was easy enough to limp these along though by superglueing them back in place. Hopefully the Mocean's are stronger in this regard.
I initially had the bright idea to mount Tunzes to mine. Over time I grew less enamored with the idea however. Initially, I mounted controllable Tunzes. This unfortunately created a pattern of flow that was really too random, which in and of itself maybe random isn't bad, but it was VERY unnatural and I didn't like it. Imagine a fire hose sweeping back and forth but someone turning the hose on and off at the same time. the effect was really jarring. ... So I switched to non controllable Tunzes and this was a little better (except it was still the sweeping firehose). Two things I still didn't really like though: wow those Tunzes are large looking when mounted on these things, and eventually the power wire itself broke because it would have a little tiny bend in it as the unit turned back and forth.
The last stage I just had them on two of my output nozzles. This was fine and I'd still have it in place if it wasn't for that I grew weary of opening them up and fixing them up on the inside. Once plastic breaks it seems you can't ever regain the same structural integrity no matter what kind of glue you use. But like has been mentioned, supposedly Vertex addressed the issue of robustness so hopefully that's not a problem.
Jason glad to hear you're getting a new tank!
