"Bouler" wrote in message
...

"Willem Van der Voort" schreef in
bericht news:grfGi.169867

The green you see on the picture is called KROOS in Dutch (watermeal -
duckweed family).

It is floating on the surface, and it is not algae.

Indeed Willem, we call it "eendenkroos", it comes and it goes.
In the old days farmers collected it to improve the soil of their
gardens..
Here a picture to see how the smal plants can cover a great deal of the
water.
--
Groeten
Bouler (The Netherlands)


Thats 'Duckweed' all right. We have it in Ireland too. Grows wherever the
water is static or slow flowing. There is some in the goldfish pond in my
garden - it is good cover for the fish but does have to be cleaned out
periodically.

Regards,
Tuppence