Nope, I aint never seen one of them there thinga-mabobs before.
I do remember back in the early 80's when they sold a series of magnets to install on water pipes. It was supposed to act like a reverse osmosis system, soften your water and eliminate all calcium and minerals that choke and burn out your heating elements inside the tank. I know a few people that shelled out $150 to try 'em. The ones that my ex-wife bought made for some dandy paper weights to use on top of napkins during windy day BBQ's outside.
You seem like an experimental type of guy. I suggest that you buy one and then start a thread on the results. You might be takin one for the team, but look at the possible benefits that you can share with fellow farmers and all of humanity!
Good luck and keep us posted.
Derf