Do you have a glass top on the tank or is it open water? You could go with 2 - Cabo Sun Mini's. That is a great choice in lighting a reef tank of that size - especially one that has a lot of SPS. Radium 250 Watt with M80 ballast has been a popular choice lately. That gives you great color and growth. If not, then the Hamilton 250 watt 14K. That is our most popular lamp and gives you a nice ice blue look to your tank.