What is the best way to properly start a saltwater aquarium?

I have a 40 gallon tank that was previously freshwater and want to get saltwater started instead. How do I treat the water properly, what materials should I have before I fish the tank; which fish are the best to start with?**NOTE** Just to clarify: the…

    What is the best way to properly start a saltwater aquarium?

    I have a 40 gallon tank that was previously freshwater and want to get saltwater started instead. How do I treat the water properly, what materials should I have before I fish the tank; which fish are the best to start with?**NOTE** Just to clarify: the…...
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