Water powered Electric motor....
Ok so in this video clip bellow I attemp to show that the water capacitor can store a charge even dou the tap water has impurieties and self discharges over time.
I havent tried distilled water. I think this will add to the charge lasting longer.
Not only does it light a LED it also runs a small electric motor before it totaly loses charge.
The video just shows that water indeed can act like a capacitor.
http://www.youtube.com/watch?v=Lt-3LYyDVEo