Thanks, Bob. I knew my idea was somewhat wild when I put it in here, and I now consider it to be all wet, so to speak, but think how much more I know about circulation in toilets now!
I especially appreciate your mention of Langmuir circulation. Irving Langmuir was a very talented fellow, it seems, having invented the gas-filled incandescent light (and I always thought it was Edison-but I guess his wasn�t filled with an inert gas). He was a Nobel laureate and has a unit of something I don�t understand named after him. He became interested in the lines of debris and foam you mention when he observed them during an Atlantic crossing in 1938 and subsequently did experimental work in a lake to explain them.
In closing, I hope none of us gets any first hand experience with fish kills from turnovers or from any other cause, for that matter. The only turnovers I like are apple.
Lou
