Bubbling sounds attractive from the standpoint of simplicity; considerably less 
effort than building a decent stirrer arrangement. However it would seem to 
present a potential problem re oxygenating the water (which after all is what 
fish tank bubblers are all about). Could this convert a substantial portion of 
the CS (ionic and/or particulate) into silver oxide, which by all and sundry is 
deemed an ineffective form? If the oxide is stable and fine enough, presumably 
the solution would remain clear - ie no tell-tale signs to go by. Please, no 
"bubbled CS works fine for me" stuff - maybe you just left enough silver to do 
the job, but lost 90% of what was potentially there. What is needed is input 
from some folks with real knowledge of the relevant chemistry. Any takers?

        regards, Kevin Nolan [email protected]