Charleen,
Adding peroxide would help but for a short while. The oxygen would come out of that too. The bubbler would add oxygen continuously and the agitation would add some more. In reading the article I got the idea that not much heat was used. After all how much heat can get through 2 folded towels. There is bound to be heat loss out the sides of the towels. A slight bit of heat shouldn't cause a large loss of oxygen.
