"Geoff Lane" wrote
I've just installed a small prefabricated pond in my garden, no fish but a
few plants. Intention is just to attract wildlife and I saw a frog dive in
yesterday evening

Trouble is I am getting a greenish film on the surface, a net doesn't pick
up anything.

The pond gets full sun until early afternoon and hen light shade, it is
not directly overhung by trees.

Anyone any ideas as to the film and a possible remedy.

Caused by Algae, the cure is not to introduce any more fertilizer (tap
water) and to cover most of the pond surface with something else like a
Water Lily. There are ones for almost any depth of pond so you should be
able to find one for yours although specialists in water lilies are rather
rare...
This is one I have used in the past and they have a comprehensive stock
especially if you visit ....
http://www.lilieswatergardens.co.uk/
or if you fancy a holiday in France the nursery where most originated from
is back up and running ...
http://www.latour-marliac.com/photoparc.php?idlangue=0

--
Regards
Bob Hobden
W.of London. UK