I have a spare 20g tank and I think I want a display refugium. It would be a stand alone skimmerless, sump less tank. I was thinking of using a couple small powerheads, a heater and compact fluorescent light. I would like a diverse group ag macro algae and maybe add some pipefish once it gets going. I have some more research to do on stocking. Any body have any suggestions or would like to share a similar tank?