I didn't want to post on this thread originally because it did seem like a bit of a 'sell' to me.....but as some people seem interested in this stuff Ill give my own experiences.
When I came off Dovonex I got a massive immune rebound (bad pustular P), and was very ill. I first saw an article about these types of foot baths in the Daily Telegraph, I think the brand was 'Aqua Detox'.
As I felt very 'toxic' and as my blood was obviously a bit dodgy with the neutophils/white cells, I was interested in this treatment. However having no cash ruled out any purchases of machines/treatments.
I do have a bit of electrical/engineering experience so I did a bit of research a built my own machine. I tested then tried it and was pretty suprised by the results.
In tests the water (including only sea salt) did change colour to orange on its own, however after 'foot treatment' there was obvious 'scum' on the water and generally the colour was slightly darker/dirtier to the naked eye. I did wash my feet first!!
I did it for 40 minutes at about 850m amps, I think the normal electrical charge is 2.5amps in commercial machines.
I did notice a significant change in my energy levels straight away, so much so that I didn't sleep for two days straight...but hey I was pretty ill....lol., this effects seemed to last about a week.
This worried me a bit to be honest, so I asked a friendly Doctor about it, she said that considering my circumstances (dovonex probs etc) that this was probably anti-toxic shock, in that my body was so used to toxified blood from long term use of the Dovonex that the rapid cleaning of the blood overstimulated my body.
I also think there may be an issue with the removal of salts from the blood, like sodium etc which your nerves/heart needs etc.
I asked her if she thought it was 'Quak-ery' but she did say that this can be regarded as a 'medical treatment' and is known as 'electrolytic dialysis', I don't think she had any reason to lie about it.
One argument is that if this theory didn't work then things like electro-platng wouldnt work...and there is plenty of evidence for that.
My understanding of it is that two elements of the same material (stainless steel) are immersed in a salt solution (electrolyte) with a small DC current passing between them. As they are made from the same material there is no exchange of metal (as in electro-plating) so a small electro-magnatic field is all that is created in the water, as your blood circulates through this current via your feet, any 'toxic' particles in your blood are drawn into the magnetic field, through the pores on your feet.
I think there is some merit in this treatment, as remember how much P cream we absorb into our skin, is it so fantastic that these types of molecules etc can't be drawn out again?, I think the basic science is sound, whether this machine is any good or not I don't know, and they do seem to have missed the point., and their 'How does it work?' section isn't very detailed.
In terms of effects on P, well I was working on my own treatment program at this time so any specific P benefits werent noticable due to the treatment program.
I have done these treatments 3 or 4 times and one of my friends tried it too, but she didn't have P, and it was on her insistence, not mine!...lol
I probably will do more treatments occaisionally in the future, but I wouldn't say it can be considered a 'P treatment'.
As for the cost?...well I built mine for less than £10...these companies are in this to make money, the parts cost virtually nothing., so I think people should be wary of any specific claims about psoriasis, but like I said, if its the type of treatment I think it is, there is some genune science in it.
I would suggest that any interested parties should try a beauty salon treatment before paying out hundreds for this.
Hope this helps,
Brian

*btw if any of the males members do buy one and try it, I've seen companies suggest a 'whole body detox' by using the elements in the bath. Electromagnetism can have a negative effect on fertility so be warned!