OK, I finally finalized my dimensions and bought the acrylic and have the pieces all cut and ready to go. Going to start glueing them together tonight. It is for my 100g planted Discus and Angel tank with a 29g sump filter.
I'm teeing off the bypass from one of my two return pumps to run water through it, overflowing out of the scrubber back into the sump. It will sit at the end of my 29g sump, and will get a little recirculation as it dumps into the pump sump area. The water will have run through the filter: 200 micron sock, 10 hole/inch foam, 1 cu. ft. of H1 media, and 30 hole/inch foam.
Pictures tonight!