Does the fish, invertebrates, and coral look healthy. do they have dead things and algae in and floating around the tank?The tank. Some place especially when dealing with saltwater you have to take a good look at what your buying. Look at the tail the body and even ask them to feed the fish or invertebrate because a unhealthy fish is less likely to eat. You want the first fish that races to the top, and that looks plump around the stomach.
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