So I went from a 13.5"W x 23"L with (4) 23W CFL to a 13.5"W x 9"L (2" is under water, so effectively a 13.5" x 7" scrubber lit by the same 4 23w cfls. I built the box outside the sump and used a full siphon 1" with a failsafe drain above. I also aluminum foiled the acrylic so there is very little light pollution.

I went from the 23"L to 7" long due the new size guidelines and also due to the lack of thick green algae (more green in the middle with increasing brown the further away from the center of the light)