I really don't want to be that guy, but do you plan i getting a bigger tank? Naso's get huge and need ample swimming room. As for the porcupine, he gets bigger and will wreck havoc on your bioload. I'm not part of the tang police, just want to make sure you aware of what you have there so far. I see no LR, what are doing as far nutrient export? Nice fish nonetheless. Regards, Tim