Lighting a 12 g eclipse

I have all my live rock in...and its been about 2 weeks..i know im gonna have to change the light out for corals and stuff....because right now the light is pretty weak ..and makes me live rock and damsel look dull....whats a good and easy to install retro kit...if someone can send me a link ..it would be greatly appreciated
Thanks
 
would this be enough lighting for an eclipse12 to hold some soft corals and stuff..such as star polyps..and mushrooms etc...?....i need some help..i need to put a new light in my tank asap....does anyone have any ecpierence with this...and could point me in the right direction
 
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