Hi Russ,

Have you checed out the company Platinum Energy Systems? (www.platinumenergysystems.ca)
They have done a similar study - very small - with four people and one control. They had the water tested for a few heavy metals, and there was a significant (I believe) difference between the various subjects, and the control - i.e. higher heavy metals in the test subjects water. I would have liked another control as well - with the feet in the water, but the machine not turned on - just to make sure the metals were not from dirty feet!
I haven't done enough research yet, but some systems must be superior - given the price range between companies...
Thanks for doing the test - and posting the pictures!