Thank you, yes that is what it appears to be, not the nice harmless duckweed
as the other poster suggested. Drat!! Will do some more research on
methods to get rid of the stuff & revitalize the pond.

Jacqui

"K30a" wrote in message
...

I did a search for floating mats of algae and came up with blue-green
algae
over and over. I suggest you look in that direction.


k30a