So....What kind of sludge color (if any) is happening with the polarity changes or what kind of affects are you noticing? If I'm understanding you correctly, you have the graters placed between your feet and you change the red clip with the black one every 5 minutes so that each foot is experiencing each polarity for 5 minutes. I think I'll set mine up tonight with 2 chairs facing each other and just trade chairs every 5 minutes to see how the different polarites affect my detox. Alex Chiu talked about using magnets on little fingers with the polarites going one way in order to do something with the blood. I used his rings and footbraces for a while but the foot braces were too uncomfortable to wear all night. I really didn't notice too much change in my health happening. I do feel better after the footbaths. I have 2 gal. of distilled water (I use it for my Neti pot and for using the Eyebright Formula) I'll add more Sea Salt this time with minerals too and we can compare notes. I know the Neti pot is helping me a lot with pollen alergies.