Most of us have touched on finding that method of 'vibrating' hydrogen out of water and implementing it... I've searched for it before but this time i searched 'resonant frequency of water molecule' and found some actual scientific info!
(with cool gif image showing the main vibrations occurring in water.)

this page is quite a bit beyond me at this stage of my knowledge.. (it's finally my weekend to get my brain back in working order lol!!)
http://www.lsbu.ac.uk/water/vibrat.htmlbut if one of you can translate it then i think we might be able to figure out the cost of creating a wave generator to attach to our hydroxy generators! going from strictly the 'brute force' method to a much more 'natural' method.
(bob you might want to edit out the gif if it get's to annoying for anyone!)
what do you think it'll take?
steve