Thanks guys!! Nope no more rock unless it fits directly in with the design. I have happily formed a very minimalist scape here that I don't plan on changing much. There is one space on the left side that I plan on building another tower and tunnel when I see the right pieces of rock. The bio pellets will provide plenty of "places" for the bacteria to make happiness. I view my rock as a "cool play ground for my fish" and also a beautiful shape to look at. The Heidi reef will never be a wall o rock kinda place.
Heidi