That is interesting, what is its purpose in a reef tank, in laymans terms if you don't mind.
I dont have the link offhand but Randy holmes farley has write up on it. There are alot of claims, not sure how much is true, but its pretty common to dose Ozone. Anytime you hear Calfo speak, he always says if there is one piece of equipment to splurg on after a skimmer its ozone (maybe he just owns Red Sea ozone generator stock though lol).
At levels it kills algae and bacteria, Raises ORP, promotes clarity, etc... A few googles will give you the answers