SJ, I have been battling these charlatans for years now. An internet search using the words " Water treatment scams " will bring up hundreds of web sites devoted to these products. (hydropath, zeta rod, easy water et. al ) They have been around for a very long time indeed. The one thing that research shows time and time again is that absolutely NONE of them has ever lived up to it's promise, and furthermore, none of them has ever stood up to real, verifiable lab testing. Furthermore most of them use the exact same tactics when confronted by experts in the field and that is to attempt to discredit the expert by claiming that he has some "ulterior" motive for his findings. Of course the ulterior motive is never revealed and if you really think about it, why would there be a motive in the first place. Mr Connell, as you have said, has impeccable credentials and most likely the only motive driving his comments is the same motive that I have, and that is simply to save folks from being scammed into spending their hard earned money on a product that simply does not work. All too often these folks buy into this stuff because it is marginally (though not always) less expensive than traditional treatment methods.
I, and many others can and have written pages explaining the " chemistry and physics " behind why these units can not possibly do what they claim to do and yet, the peddlers of this stuff totally dismiss modern science as though the laws of physics can be ignored because they say so. It's ludicrous for anyone to believe that a device that plugs into 120V A/C could even begin to produce an effect at all.
I wish to repeat to all that have labored through reading all these posts that one way or another, it is vital to do your homework before taking anyone's word for anything.