As well as the basic algae scrubber, which worked fine but I was always safety conscious about splashing salt water! I was lucky enough to be given a pre made unit by a fellow forum member, for which I used warm white cfl bulbs to light the screen. 2x 9w bulbs on either side gave some good growth, but unfortunately I did not document it so well for my own personal use. I placed all of my pictures on a forum, which is no longer running, whoops. The build is below, you will see that I modified some bits of cardboard to prevent light from leaking out and being more direct on the screen.

Algae Turf Scrubber Algae Turf Scrubber Algae Turf Scrubber
Algae Turf Scrubber Algae Turf Scrubber  

I had many ideas of making my own algae scrubber from acrylic and using leds. 660nm was decided to be the best wavelength for great growth, so I experimented with some 3W. I also planned and had a acrylic unit made up, but it was never used in anger due to being too big for the new aquarium I was to purchase.

Algae Turf Scrubber Algae Turf Scrubber Algae Turf Scrubber
Algae Turf Scrubber Algae Turf Scrubber  

Looking at this design now, it isn't too different to the one I purchased and am currently using!