Start with a RODI
unit even before you think about lighting, It should be the first piece of equipment you purchase. A lot of people think that it is just an extra and dumping chemicals in your tap water to make it usable is the way to go. But its not, start out right. Second most important thing you need is patience, Keep in mind it will be 6-8 weeks after you put water in for tank to cycle, and then only add 1 fish very 1-2 weeks. Also note that salt water is a lot different then fresh for as many fish you can keep in a tank. You will be limited to 4-6 small to medium fish, and NO tangs.