You need to make sure the tank is cycled. Is the live rock cured or raw? Do you have a test kit to monitor ammonia, nitrate and nitrite? I would not add any animals until your tank is completely cycled. The amount of time can vary. Go by the test kit. If you "feed" the tank (e.g. add flake food or small pieces of shrimp), and you get an ammonia reading after a day or so, the tank is not cycled. a tank is cycled when ammonia and nitrite read zero, and you detectable nitrate. at that point, do a water change to get nitrates down, and slowly start adding livestock.