Why not take this idea to the next level? Use electricity with water.

Have a cathode in one end of the reservoir an anode in the other and your wires hooked up to these. This is a basic hydrogen generator.
With the right voltage you would bubble the reservoir enough that no air pump would be needed.

Am I just really stoned, or does this sound like a brilliant idea? :S5: .....

.....but we would need to do something with that flammable gas we just created...