There is another forum where a few are experimenting with this using a 120vAC to 4.5vDC and I forget what the milliamps were (350mA rings a bell maybe), but it was a cell phone charger basically modified and electrodes placed in the soil....it vegged about twice as big, twice as fast compared to the non-electrified plants. Unfortunately no-one has gotten past the veggin so far, but it certainly would appear it does increase the veggin mass and much quicker too. I'm just finishing up some stuff, but I might try this next batch...looks interesting. I have plenty of old phone chargers lying around!
I would really like to see what it does to a flowering plant....twice the bud in half the time??? Yea, I'm interested!