Oxidizing agents of any sort used while metal toxic are detrimental to dangerous. Includes O3, Hg, Miracle-Mineral-Supplement , Chlorine and Iodine...
It's an Alchemy thing, lets take an Hg+Stan bond with 6 positive charged ions and add a radical O3 - Ozone element to that and we and up with 18 positive charged ions...so now you need 3x the Stannum to remove it...
Also lets be clear about the amount of O3, I see nothing wrong with a glass of O3 - Ozone charged water but I do see issues when more is added...
If oxidizing was a good long term solution then the medical use of Hg would have solved all our issues...