A few years ago I tried a waterfall scrubber in my wet/dry. I had a difficult time getting sufficient light evenly dispersed and took down the scrubber. I'm having another go at it and have installed a factory made scrubber that I picked up unused a few years back (AquariCare). I've included a video showing the set-up. If you have any suggestions or feedback please let me know.
Thanks!
http://youtu.be/nsvxd2fn4GA