Welcome to Canreef and Saltwater!
Having a 30" tank is not always the easiest. Here is a link to a light that might work well for you. They are not high end lights, but they stagger the bulbs (for better coverage of 30") and they have individual reflectors (which is important for good lighting) and they are resonably priced.
http://www.catalinaaquarium.com/prod...oducts_id=1414
Hope that helps.