When I built my very first pond, I had the same problem. I made a "manifold"
of sorts: a Tee off the feeder line, with two lengths of PVC, capped at the
ends. I drilled the PVC to give holes for the water to escape, but now -
instead of coming out of one hole (fast!) it came out of two dozen holes
(much more slowly). With a rock or two on top of it, you never even saw it.

Hope this helps.
Lee

"Norm Courage" wrote in message
able.rogers.com...

We just finished our new waterfalls using Great Stuff expanding foam to
seal
the cracks, it worked great, thanks to everyone in the group for the
helpful
advice. Now my question, we are looking for a way to diffuse the incoming
water supply for the falls, it is fed by a 2 inch return line (1650
imp.gallons) from my bio filter and at present it shoots out past the 2
upper most tiers of the falls. Anyone else encountered and conquered this
?
--
The Courages