i just started my 46 gallon saltwater tank two days ago. I baught a bit of live rock and 50 pounds of live sand. I had my water tested and everything was fine. I bought a damsel Today and he was fine at first but now he has what appears to be ick. He is the only fish in a brand new tank. I don't want him to die nor do I want this to spread. Please help me. I don't know how to help him. He has a heater an emporor 400 filter and his lighting as well as live sand and rock. He has about 5 white spots what do I do?