Thanks for the input. I may re-do my african tank now.Looks much better!! but rather than building it up, I'd take off the rocks on top, and stack them more on the sides and in front... it makes nice little tunnels and nooks and crannies that way. The big openings of the rocks look cool to us, but are like the grand canyon to the fish... no protection at all.
It is odd in some ways, but the more protective covering you have for the fish to hide in and get to, the more you will see your fish!!