I am running a 75gal with 4 95watt VHO's. Currently I have a hammer, xenia and a few other corals. I have the opportunity to get 2 175 MH fixtures, would this give me more options for coral. I would like to add coral that have the vibrant colors that hammer coral do, but I am afraid to do that I would have to go to 400watt MH. Colors like in the Acropora. I believe this is a hard coral to keep? but something with those colors. Any input would much appreciated.