I also have a 20 gal high nano tank, that is just fish with live rock, no corals, (yet) However I am in the process of cycleing a new 56 gal reef! I am so excited, I have the live rock on the way, ups. It is So expensive where I am here in Maine its 9 a pound. I have the correct lighting for corals on this one, not on my nano though. I will go see if I can find your pics. I havent taken any of mine.