"Mike Lyle" wrote in message
...
Bengt Boysen wrote:
[...]
you should add one or perhaps two bales of straw to the pond. This
will keep the pond free from algae. [...]

Not my field, but isn't it the case that the straw must be
barley-straw, not wheat or oat? Not sure why I think this, but it's
lodged in my memory for some reason.

That is what I understood too. But mine is entirely book-knowledg in
this case.

Franz