With my experience in lighting I beilive that L.E.D lighting is extremely nice and offer a vast spectrum of colors for coral color "enhancement" , but I do believe that is all they do - enhance. You will not get coral growth and health out of L.E.D lighting alone. I would focus on what you know works best and find Somthing to fit your custom needs. Now if everyone's done booing me yet I'll blow your mind with this little tidbit. My "vase" reef I discussed previously , is sharing a light from my 10g nano, currently has a metal halide fixture with lunars. Yea I know hence my name crazydave06, and no, no heat issue ��.