It's time for me to purchase some more permanent lighting for my tank. I have a loaner light set up that's worked out for the first three months. My tank is a 72" x 18" x 18" and 125 gallons. Right now I have a few zoanthid colonies, some mushrooms, and an anemone but eventually I may want SPS. Would a 6' 250 watt MH be too much or what would you recommend?