I have a 30 gal that I'm trying to "aquascape". The tank is on the lower end with about 1 watt per gal lighting. I am trying to come up with some groundcover or foreground plants to fill out the tank but any recommendations are appreciated. I also would like to say that i have a layer of 3 to 4 inches of course gravel. I know its not the best substrate for plants, but I'm trying to work with it at least for now. Thanks