Thought I would share my space saving algae scrubber. Made from from 4" pvc pipe and 1" pvc sections to make the lamp holders. I had one of the Tunze refugium leds on hand already so I just ordered a second for a two sided screen setup. It took simple tools to build. A chop saw, dremel, pipe cutters. It could probably be done with just a dremel if one has a steady hand. Haven't had this one wet just yet but I did build an earlier proof of concept that worked.