Bio-cleanse

I saw this presentation by this homeopathic guy. I was pretty amazed by this water turning into this black gunk. I was pretty skeptical b/c I couldn't believe this stuff could come out of your feet. It was so thick.

Well I talk to some other people at this wellness festival about it and someone said that every if there the water is charged with machine it will turn colors... so it seems like it's sort of a scam. Is that true? She did admit that it does remove some toxins.

Do you guys know anything about it?