i agree about the ozone bubble and soap bubble meeting. In my situation, where I do not have a 24/7 clean cycle, as many of us do not, the ozone would not be as effective. However, with 24/7 cleaning a lot more of those bubbles would meet.
My reason that i am returning my ozone unit, is that I have limited filtration cycles, and so whatever value ozone does have would be reduced by 75% less run time. I am not against ozone in the least. I am convinced, however, that is is not cost effective for anyone, and even less so for me. I do think there is somewhat of a convenience, safety, and peace-of-mind factor for those who do purchase ozonators and are especially usefull for those that do not use their tubs very often.
My .02 worth.
Cary in S. Dakota