Like I said this isnt my first tank, and in the end, I am buying 12 lbs of rock. To fill the 12g JBJ. I will also get extra and repalce some of the ceramic rings with extra LR. My LFS also cures his own LR. I am also getting roughly 20lbs of LS free from my LFS, and I have a small 2lb bag of dry left over from kmy refugium build. The tank will be cycled with extra rock from my tank, which will then be slowly switched out with the new rock. I believe I am getting a G. Smithii, and from my research seem to require much the same parameters as a N. Wennearea. I am also getting him for free, partly because my LFS wants to see how these guys fare in captivity, and if they may want to start selling them. Thanks for teh help everyone.