Russ,thank you,i am very interested in your experiment with the ion foot baths,i have done 3 sessions so far and i really do feel an improvment in myself,you stated that you ran the ion machine without any feet in the water and it still turn a color,you realize the water will turn colors regardless because of the chemicials in the water,it will change different from place to place as water has different levels of toxic material in it...my question is are you sure that the water turned so bad when you ran the machine alone,looke like the water is pretty bad in your area,cause i ran the nachine without water and it just turned a light tea color....BTW...my first session and my water turned a real nasty,and turn lighter with each session....may i ask how much your machine cost you were testing,there are cheap machines out there too that dont work properly i have been told....i thank you in advance for your answer,best wishes