Hi Willie634,
I don't think you're doing anything "wrong", but you are doing it different enough from me that I can see questions, but can't tell enough of what you're doing to actually give you definite answers. Does that make sense (I hope)?
But I have some suggestions..
IMO that was good thinking to check with a magnet, but since Stainless Steel is an alloy, I'm not sure what you meant by "pure" stainless steel.
For your entertainment (and possible further confusion):
http://en.wikipedia.org/wiki/SAE_steel_grades
The battery charger I am using to power the foot bath is a 1.5A max, microprocessor-controlled automatic floating charger, the Schumacher SEM-1562A ($20.95 @ Walmart). I think your power adaptor may not be big enough, but if you're going to use something bigger I think the safety of a self-limiting charger is- well, safer.
I did not see mention of salt in your post. I am using Himalayan Pink and/or Celtic
Sea Salt , both of which work fine. I suggest you *not* use
table salt nor Hain
Sea Salt , which is still nothing but Sodium Chloride. The salt helps the conductivity of your foot bath water.
Lastly, I have not had good results using silverware, and for that reason am using S/S cheese graters (2 of them); they are set into plastic frames and I have fastened them together. They are spaced ~ 1/2" apart. They work fine thus far, although I am looking now for something which will be easier to clean.
So I think most likely the spoons are your first issue, followed by the charger you are using and the fact that you do not mention the presence of salt in your foot bath water.
If I were you and could change nothing else, I'd at least pick up a couple of S/S cheese graters and add 2 tablespoons of Celtic or Himalayan salt to your water.
Please post your results when you try any of this, and thanks :-)!
Stay well,
Ladylove :-)