I kept some old rock from a tank I had 6 years ago, don't ask me why i kept it I don't know. I am going to get some live rock to put in today. I was able to steal some crushed coral of the top of my friends sand bed to help it start a bit faster but I am still waiting for the water to spike from the dead shrimp i threw in. I figure in like two weeks I will probably be able to get a fish. Why would you recommend two clowns over the shrimpgoby? Are the gobies just harder or the tank isn't big enough to handle the bioload?