Harry Ziman wrote:
We are about to install a large pond in our garden. We don't intend
to keep fish in it, but do want to keep the water clear.

The advice we have received is that we need a UV clarifier to
prevent
algae formation but, as there will be no fish, there is no need for
a
filter to go with it. The algae will clump together and settle to
the
bottom.

However, looking here, it seems to suggest that a filter is
needed -
does anyone have any experience and if so can you let us know. I
don't want to make an expensive mistake and install the wrong
system.

Many thanks in advance.

Maybe try the traditional solution, a couple of bundles of barley
straw, and see if that works before lashing out.

--
Mike.