I want a planted aquarium. I like the cavey look with plants growing all over the caves and whatnot. My question is is how can I create a nice sized cave withought adding a crapload of gravel? Also, how many pairs could I reasonably go with? Is 3 too many? What is the chance of my fish breeding? Could someone lead me in the right direction for a stunning natural looking setup? I absolutely HATE driftwood. It is so ugly to me.