Originally posted by portable ladder:
close...but not quite...this stuff is more of a nasty brown goo...I really need to get some pictures up....I don't have any stringy green underwater plant growth like in that FA picture, it is entirely floating in all areas of pond....deep and shallow, it covers approx. 3% of the surface at the present...any other guesses or pictures to help me id would be greatly appreciated!!!
A couple of times each summer I experience what sounds like exactly the same thing as you have. Sometimes it thickens and curdles. Sometimes it seems to have an oily sheen. When it curdles, it looks like a few of the cows snuck (sneaked?) down to the pond and took a dump.
I had a little bit of it over the past couple of days. I took the camera down to the pond this evening, and it was completely gone. When I came home past my neighbor's pond tonight, it looked like the cows had some serious disrespect for his pond -- except his critters are all fenced off from the pond.
I'm not sure, but I think mine forms about a week after I've weed-whacked the edges of the pond, and the weather has turned really hot and sunny.
Except for ruining the desire to go for a swim, it doesn't seem to affect anything else in my pond.