Seems like a lot of breakthroughs in understanding and perfecting them have been made recently... I love the idea of no mechanical filtration, which leaves tank water full of goodies while zapping nitrates/phosphates
Yeah, looks like people have gotten pretty creative with them, and "properly" sized double sided units producing serious weight every single week... I'm really thinking I'm gonna try my hand at fabricating one to run on my next system (120 + sump) to run in parallel with my old skimmer from the 75 (Tunze 9410)
I stole this sizing guideline from a forum dedicated to algae scrubbers... Many people there are using them to entirely replace skimmers and other mechanical filtration (socks, gfo, pads,etc)... Another supposed major benefit here is that organic food particles are left in the water for corals, etc while the inorganics (Nitrates, Phosphates) are removed
"Quick Guideline, using feedings:
Each cube of frozen food you feed per day needs 12 square inches of screen, with a light on both sides totaling 12 real watts. Thus a nano that is fed one cube a day would need a screen 3 X 4 inches with a 6 real watt bulb on each side. A larger tank that is fed 10 cubes a day would need a screen 10 X 12 inches with 60 real watts of light on each side. If you feed flake, feeder fish, or anything else, you will need to blend it up super thick, strain out the excess water, pour it into a cube, and see how many cubes it is. And for Nori, 8 square inches = 1 cube."