Jon , That looks great . I can't wait to see it after it gets some age on it . (color and stuff growing on it . ) I did a faux rock wall on the back , and one end of my tank . I also used some foam , but only to secure the wall to the tank . I did my wall , because I hated cleaning the back of my tank . I guess you can say I did it because I'm lazy , but I do like the way it looks .
Ted