On Mon, 25 Jul 2011 09:09:55 +0100, Amanda wrote:

Well loop the waterfall liner back up around something so it forms
an
edge for the water that flows around the end and back along the
horizontal underside can drip from.

fixed pitch font

\
\
___ \
U

That's definitely worth looking into, but will mean getting a whole new
liner for the stream as it's too short to do that at the moment.

The "U" doesn't have to be very big, water really doesn't like
running up hill. B-) The more vertical you can get the rear side
the better, 1/4" vertical would probably do but 1/2" would be better.
Depends a bit on how thick/flexable the stream liner is.

--
Cheers
Dave.