Stingray, yeah the great stuff went on first. I waited a week or so to let it cure also because I couldn't find the time any earlier to mess with it. Then I shaped it out with the dremel and applied the epoxy. Before the epoxy dries I poured the crushed coral sand all over it and patted it down into the epoxy. After another week or so I looked it over and applied more epoxy to the places that I missed and let it cure again. When it was all ready I siliconed it to the back wall of the nano, I used the all glass silicone that's safe for fish. Lps1212, thanks, I'll post more recent pics when my stupid computer finally gets fixed.