There is just something strangely soothing about the natural scape in my 20 gallon..I keep searching for some way to make the 37 gallon more pleasing to the eye. I can't quite figure out what I want to do, but I feel like it's lacking balance. I keep looking at the plant selection at my LFS but their slection of low light plants is small and nothing has caught my attention. I have a few more interesting pieces of driftwood I could try, but since that first piece I found didn't work out so great, Idk if I should try any of them...which brought up the rock idea. Either way, I might try the java moss idea..I love the way it looks in the picture.