hello guys and gals, i am getting ready to install a new 275 reef tank in my home. i used to have a 240 but had a large accident and lost all. that was ten years ago. i have missed this hobby greatly. any how my question is i would like some personal opinions on what lighting i should install. i do not know anything about the led lights they offer now other than they are not cheap. so led vs metal halide. and second question is what is the recommeded gpm flow for my tank... 72x24x37high