I haven't actually set up a tank yet but I am planning on a 12 gallon nano and I was thinking about getting 16 lbs. of live rock and a polyp 5 pack and for coral. FOr fish I was going to get one yellow clown goby and one green clown goby, and I was wondering if a black goby would be suitable too. I understand that I have to wait a while before putting fish in but I am just trying to get an idea