BTW - don't underestimate the need for these fish to be fed. Just because they can be reef safe doesn't mean that they are reef friendly. My current pinktail is about 5" and will eat the large sheet of nori all by it's self. The durgeon will do almost the same. When I had my 7" crosshatch, he would eat even more. This is a lot of waste that even the largest and cleanest of systems will suffer from.
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