"Galen Hekhuis" wrote in message
...
I don't particularly want to eradicate
it, but I'm hoping the water motion (much like the wind blowing across
the water) caused by the aerator will banish the duckweed to the still
backwaters of the pond, leaving most of it clear.

(Brevity snipped)

==========================If these ponds never dry up, why not add a few inexpensive goldfish
or small koi? Someone may have a few culls they'd love to get rid of.
These fish love duckweed and will get rid of all of it in time.
--
RM....
Frugal ponding since 1995.
rec.ponder since late 1996.
Zone 6. Middle TN USA
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