I've seen a lot of tanks with a lot of large ca/sa cichlids that basically have a piece of wood sitting in the center of them.. Is this better to keep down aggro? My tank has large rocks and driftwood all over, making a few caves/homes, that my fish guard, and with chasing. I'm not overstocked at the moment, and want that look with the fish swimming around, and not hanging around their caves.. Any suggestions?