"Jaques d'Alltrades" wrote in
message ...
The message
from Kay Easton contains these words:
In article ,
Cumberpach
writes

You could always buy a couple of portions of Azolla Filiculoides
(Fairy
moss) from Bromfield and when it covers half the pond, skim it
off onto the
compost heap. I would recommend a UV lamp to assist filtration,
but this
will only get rid of the algea and not the blanket weed.

Be careful with that, though. Azolla is very vigorous and has
spread to
many of our natural ponds where it will grow into a thick
inpenetrable
layer and is very difficult to get rid of.

Despite its common name, it is in fact a fern.

Isn't that the stuff which has cost about nine million (pounds) to
control in two large lakes?

I have a feeling that you might be thinking of water hyacinth.

Franz