On 20/7/07 13:22, in article ,
"Steve Wolstenholme" wrote:

On Fri, 20 Jul 2007 12:13:38 +0100, Sacha
wrote:

Someone has suggested grass carp for the duckweed problem on one of our
ponds. But the general impression I get from the little I read is that they
grow to enormous sizes, are lake fish and are banned in US because they
devastate lake vegetation. Does anyone here have any experience of these in
UK and ponds, not lakes?

I haven't had any for about 40 years. They weren't much trouble. They
only grow to their huge size while there is lots of food available.
Once they have eaten your duckweed and every other plant in your pond.

The problem with grass carp is they don't look very nice and are a bit
messy if they need to dig up the pond.

Steve

Matthew now tells me he put some in the oldest pond some years ago! Trouble
is, he can't remember what they look like or where he got them...! I'm not
sure he's remembering the right thing because that pond is full of
oxygenating weed, which nothing is eating!

--
Sacha
http://www.hillhousenursery.co.uk
(remove weeds from address)
'We do not inherit the earth from our ancestors, we borrow it from our
children.'