Splinter492 03-15-2010 12:27 PM i get mine from my backyard we have all kinds of rocks from lake superorior and other places like that. like stated before slate is a good choice and some small boulders you can make an appertment style rockwork my cichlids love it! but when you do this make sure your rock is against the glass and not ontop of the substrate because if they start digging your rocks c