LED chains are going to use standard recovery rectifiers. I burned out a few standard recovery rectifiers in switching regulators before I got wise to the fact that the slow turn-off times make them get hot at high speeds, like 20khz and up. But if it ran at 1khz or so it might not be a problem.
Might be a stand-alone product. Main concern with that would be somebody plugging the wrong thing into it, and the subsequent liability issues.
Sorry to hear you didn't pursue the zebra mussel thing, Ted. There's a guy over here who built something along these lines, though it was a lot more low-tech. After testing last summer, we had a hundred pounds of dead zebra mussels stinking up the back lot.