I am just about finished setting up my new 10'x4' tank, the last item that i have to do is figure out what color sand I will be using. The tank is going to hold both peacock bass, an awarana and a handfull of black rays. Which color sand would you guys recommend using to make the fish's colors stand out the best. As of right now I am planning on using CaribSea sand in either Tahitian Moon black sand or Sun Set Gold light brown sand. Lets here what you guys would go with.