My 30 gallon salt water aquarium is all set up and i need to know what to do next. Every website or person I have consulted have told me to do different things. My filter has been running for about 36 hours now and I need to know what I should do next. I was going to get my live rock today, but then I was advised not to by an employee at Petco. I also don't understand how I'm supposed to get the nitrogen cycle started. Eventually, in my tank I want two clown fish, maybe two hermit crabs, and one starfish.