Looking good joeotley. Check out your local rock quarry or landscape supply store for slate and rockwork. Save you a lot of money in the long run. The black sand would've been cool but I like the brownish color as well. I'd use darker slate as well to contrast those Labs. Tank looks clean and healthy, congrats.
cheers afro, I'll look into that, time to take a browse around builders yards etc...I'll keep you posted on the tank?
Thanks for the feedback everyone else, I'll put up soem more pics in a second...