Lighting Upgrade

I have decided to change my single florescent light to something better for corals. My LFS uses alot of Halide. But I like compact florescent? I have a 10 gal now cause i wanted to get my feet wet. I have a 30 gal that is freshwater which im gonna change it to saltwater. Idk weather to wait or go ahead and get a better lighting system for my current saltwater. I know metal halide reaches deeper than compact florescent.
 
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