The galvanized steel would be electrochemically protected (any rust and corrosion would actually be reversed in these conditions) and would not leach. I will not build something I wouldn't put into my own tank.
I am going to finish reading a few of the published biorock scientific papers and do a few designs over the next two weeks. I have the Olympics off basically as I can't get to work (my lab is right next to the hockey venue). After that I'll build it and give it a test in my lab on my potentiostat to make sure the materials are safe, how much power it needs, etc.
I'd prefer an established set-up for a whole laundry list of reasons. The big one being stability; also someone with a good knowledge of SPS is a benefit too (not saying that anyone here isn't). My SPS tank is stable but small (20G) and young... That is too many variables as it is without adding a gizmo to it and trying to determine results.
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