On Wed, 22 Dec 2004 12:37:33 +1100, Ozdude wrote:

As for the hood; it's already got a matte white reflector surface inside but
I intend to make this as reflective as possible, and in the process alter
the side angles using styrofoam inserts, so the majority of the light hits
the water surface at 90 degrees or as close to it as possible. I am using
some 3D ray-tracing software to trace the rays from the tubes, so I should
get somewhat close to optimal.

Love to see the design you come up with, maybe write a how to and share
your experiences with us

I seem to remember reading somewhere that you can only improve on a
reflective surface (over a mat white) by a small percentage? I may be
wrong?

grop