finallyfaith
go to ebay and look for ozone generators sold by enaly, they are made in china. the chinese make very high quality affordable ozonators for a simple reason - they have fouled up their environment so badly they need to ozonate their drinking water just to keep from being poisoned by it.
if you find a unit that looks interesting you could ask in the oxygen therapy forum for input on it.
i have no affiliation with any company that sells ozone products.