I can testify that at least the foot bath that I used does pull out some heavy metals out, or at least stirs them up. Actually having a foot bath let to my diagnosis of mercury poisoning. Long story made very short: I had the foot bath. Alot of icky stuff came into the water, beside the normal water color change. I felt ok right afterward but as time went on I went downhill. I began to have major dizziness, muscle weakness and extreme exhaustion. I couldn't get out of bed for almost a week. I went to my doctor (an osteopath) he said I must get the amalgams out and start detox. After doing a week of intense research I realized that doing the footbath with the amalgams in was very dangerous. It was pulling more mercury out of them. I have since had most of the amalgam replaced. Hope to have the last small one, as well as, some older white fillings replaced and two permanent retainers removed soon.

Probably an electrical charge causing the problem. the amalgams are known to release mercury even in the simple presence of just disimilar metals in the mouth, where they create their own charge known as galvanizing.

Electric shock therapy must work wonders for people with amalgams too. I should probably make sure my computer is properly grounded.

I would like to test the foot bath water before and after to see the levels of mercury , and see how much is pulled out during the detox process ( kinda like myth busters )

This may help:

http://herballure.com/Studies/IonicFootSpa.html