Looks great. love the layout. The hanging plant to the right, i also have those,there great for hiding equipment. Its an Exoterra plant right? Hagen makes them, there made from the same material that there aquatic silk plants are made from so there safe for aquariums,although they sell them for reptiles. Substrate looks good too. i had black sand in with my uaru befor also, but i found my uaru were very dark in color and there black blotch seemed to bleed into the rest of there body, until i switched to white PFS, now there base color is a nice creamy beige color, and the wedge and black eye spot are more defined and very promenent as well as dark black. I think black sand looks far better in a tank, but my uaru look better against a white sand/ black background.
My tank looked alot like yours at one time, looked like there were no fish, and i use to get comments like "wheres the fish?" but now that mine are larger now, most people think they are beautiful fish. At one point, i almost sold all my uaru because i got frusterated with them being slow growers, always hiding, and made the tank look bare. But im glad i didnt cause now i can "pet" them, they'll eat anything from my hand(even a small pellet) there never hinding, and there always slowly swimming threwout the tank.
anyway, sorry to ramble, lovin your uaru threads, keep them comming!