So I wondered whether the black dye used to colour water in Kew's pond
was
available to buy, and if so what it is? They added it to stop algal
growth
and it obviously didn't affect the plants. (Saw it on "A Year at Kew")

Any ideas, or has anyone tried using it?

Marina

Just notice bradshaws sell it and their service is normally very good.
http://www.bradshawsdirect.co.uk/Bra...uct/NIWEED.htm

Paul
----
Thanks Camilla and Paul ;-)

I will try Bradshaws first, as like you, I have found them very good in the
past.

Best wishes,
Marina