I'm getting a 2 inch black piranha for my 10 gallon. Since they only grow about an inch a year I figure I can keep it in there for a while. I'm gonna just get a couple amazon swords for plants. I'm gonna put a powerhead for some currant. How would sand work for the plants? I'm gonna use about 34 watts for lighting. What else should I do to make it as natural as I can and get the best color?