Larry --
That's an interesting idea. And honestly I hadn't thought of trying horizontal movement -- could indeed be worth a try.
One possible problem: the thing about chara is that it can spread simply by breaking apart (devious stuff, eh!?). We get some really stiff winds whipping through here from time to time, and my guess is that any broken stem of chara could simply re-establish itself on the windward side of the pond.
No, I think I'm probably going to be locked into a "cold war" with chara as long as there is water in the pond. And I have to admit, there are times in the winter -- when the water is exceptionally clear -- when it's almost attractive.
I think another problem we had this year (besides a missed application of dye) is the family of Canada geese that "adopted" the pond. Don't think we'll be anywhere near as welcoming next year! Man, can they ever "fowl" a small pond! -- Mike
