Here is a video of latest setup. Found a stainless steel container at walmart, and thought of putting the whole container as the positive electrode. Put a galvanized steel negative electrode in the middle kept from touching the sides. Used a mix of 10 parts epsom salts and 2 parts baking soda (created quite a messy soup, when we added the baking soda).

We got quite a lot of production, couldnt inflate balloon since we had some weak points in the setup and some places that leaked when it was pressurized. Will seal it off better before next time.

http://www.youtube.com/watch?v=xQiuBCBHIew

Still though, not bad at all for the second time trying.