Thanks Lost.

Do I have to turn off filter and UV ?

Jim

"Lostin1999" wrote in message
...
im no expert...

but in rec.ponds someone was talking about using Koi Clay or non clumping
Kitty Litter to remove Blanket weed..

although its still an ongoing trial, it seems a little placed at the top
of
your water falls may be what's needed.. (so far ive been OK with blanket
weed (keeping it so low I have not needed to resort to chemicals etc.. (I
know, lucky me))) uv will do NOTHING for blanket weed removal, it could
be
said it assists it, as it allows nutrients from decaying water bound algae
(green water stuff) to grow...

this is a good source of info on algae and may be of help (from a
rec.ponds
poster (Kathy (Ka30p))

HTH

Lost



"Jim" wrote in message
...
Had a stone waterfall put in about 9 months ago and this year has been
an
absolute nightmare for blanketweed. Always had it but never this bad.

Waterfall gets covered in it and no matter how thoroughly I clean
waterfall
and pond it's back within a couple of weeks.

I have used chemicals to treat it, and have UV and filter pond size 5000
litres.

Please help

--
Jim
Moulton, Northampton