After 5+ years of running a fuge with rock and macro algae that was always a place for detritus to rest and other algae to build up, I decided to try something different. I removed all of the live rock, cleaned out all of the detritus and algae, and added a 8"x8"x4" MarinePure Ceramic Biomedia Plate. Have read many good reviews about these as biomedia and figured I would give it a try since one block has 23,000 square feet of surface area. I will report back with results as time goes on.