Thanks bro, good addition. I understood your prior points too and my post was not meant to object but to augment.
The zebra mussels are too many now. The government biologists introduced some sort of fish (I forgot the name) that feeds on them but they out-competed the natives. Now they are thinking about how to control that mussel-eating fish, probably by introducing a predator that eats them. And so on. There is almost always bad that comes with these "natural" remedies as well, nothing's ever 100%, but at least our hobby does not suffer nor any individual keeper when the government biologists play. When we start playing, that will be the end or the beginning thereof.