On 2014-03-06 23:00:17 +0000, Martin said:

On Thu, 6 Mar 2014 17:07:44 +0000, Sacha wrote:

On 2014-03-06 15:53:23 +0000, Martin said:

On Thu, 6 Mar 2014 15:34:45 +0000, Sacha wrote:

In The Garden of Evening Mists, the woman learning from the Japanese
master is set to making balls out of copper strips. These are thrown
into the pond and sink. He tells her this is to deter algae. Has anyone
ever tried it and I wonder if it would work on the accursed duckweed?

The Dutch used to put powered copper electrodes in the water of their
large boat
houses to reduce weed. It's probably banned now.
There are no fish left in the IJsselmeer because either
a) Over fishing - government version.
b) The water is too clean, so no food for the fish to feed on. Fishermen's
version.
There is going to be a three year ban on fishing.

Bit like putting copper on the keel of a boat to deter barnacles etc.,
I suppose.

and copper based antifouling.

Is that what's been banned because it damages sea creatures?
--

Sacha
www.hillhousenursery.com
South Devon
www.helpforheroes.org.uk

"Sacha" wrote in message ...


Bit like putting copper on the keel of a boat to deter barnacles etc.,
I suppose.

and copper based antifouling.

Is that what's been banned because it damages sea creatures?
--

Sacha


===============================================

I agree with you there Sacha, I thought it had been banned back in the
1970's when I was involved with the Marine Industry.

Mike

---------------------------------------------------------------
www.friendsofshanklintheatre.co.uk
www.hmscollingwoodassociation.com
www.rneba.org.uk
www.nsrafa.org

On 2014-03-07 11:29:08 +0000, Martin said:

On Fri, 7 Mar 2014 08:51:48 +0000, Sacha wrote:

On 2014-03-06 23:00:17 +0000, Martin said:

On Thu, 6 Mar 2014 17:07:44 +0000, Sacha wrote:

On 2014-03-06 15:53:23 +0000, Martin said:

On Thu, 6 Mar 2014 15:34:45 +0000, Sacha wrote:

In The Garden of Evening Mists, the woman learning from the Japanese
master is set to making balls out of copper strips. These are thrown
into the pond and sink. He tells her this is to deter algae. Has anyone
ever tried it and I wonder if it would work on the accursed duckweed?

The Dutch used to put powered copper electrodes in the water of their
large boat
houses to reduce weed. It's probably banned now.
There are no fish left in the IJsselmeer because either
a) Over fishing - government version.
b) The water is too clean, so no food for the fish to feed on. Fishermen's
version.
There is going to be a three year ban on fishing.

Bit like putting copper on the keel of a boat to deter barnacles etc.,
I suppose.

and copper based antifouling.

Is that what's been banned because it damages sea creatures?

Only by the Dutch in inland waters. Antifouling containing TBT is the chemical
that is banned everywhere.

Ah yes, that's what I was thinking of.

I'm not sure what the situation is with commercial boats/ships often they are
excluded from this sort of ban.

No idea how much it's used nowadays. I just knew it had been used to
protect the hulls below the waterline and to deter weevils, barnacles
etc.


--

Sacha
www.hillhousenursery.com
South Devon
www.helpforheroes.org.uk