It does make me wonder tho... would copper be ok? I had a couple of copper wires that I fashioned into some leads, dipped them into a bath of sea and Epsom Salts , and it took right off. Did a session like that. Seemed fine. Tho wonder what the dispersing of copper into the water would mean of course.
Just musing about all that. Stainless steel would likely be the best. Thought about looking into some stainless steel bbq utensils which are longer, and fashioning them into something doable. I've been playing with positioning of the contact points in the water and am quickly finding surface area may not be as important as placement. I had the copper leads almost 1' apart, and the results were quite nice. Just not sure if it is wise to stay with copper is all. Tho it is a dandy conductor.
I am liking all this discussion folks. While all this may be ancient news, it is new to me.
And in the totally useless Information Department of Useless Information, I live a little over a mile from where Tesla did a lot of his work.