Acrylic rods, where might one go about finding those? Home Depot, Lowes perhaps? What thickness do you think you would need to support that much weight. As far as being noticeable, I couldn't really see any of the supports in the pics, I just assumed based on the defiance of gravity. I was actually thinking about using gel super glue and course aragonite to cover the visible parts of the pvc on my tank. I don't know how well that would stand the test of time and flow, but I figured it was worth a shot.