Bright,, I have been doing home administered ozone therapy for about 6 months now. Regarding the ears, you need to NOT exceed 4 to 9 gamma out put. I'm told that any more will for the lack of better words oxidize your skin- severally drying it out.
Just FYI if you are breathing it you MUST bubble it through olive oil. To make drinking water I crank my machine up and treat 16 oz for 20 minutes minimum.
Hope this helps...