Try posting you question on ...
rec.aquaria.marine.misc or a similar group
They should know about growing seaweed although their's would tend to be
from warm climates.
Suggest you get hold of some marine fishtank salts ( contains all sorts of
trace minerals too)and use that to make up the correct mixture strength as
stated on the packet, you will also need to provide movement in the water by
perhaps using an airpump and stone, possibly even a filter system. I do know
it's not an easy task at all to keep it growing.
--
Bob
http://www.pooleygreengrowers.org.uk/ about an allotment site
in Runnymede, fighting for its existence against bureaucracy.
Are you using ordinary table salt or sea salt?
--
Regards,
Alan.
Preserve wildlife - Pickle a SQUIRREL to reply.
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David Hill, Abacus Nurseries, South Wales,
www.abacus-nurseries.co.uk
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