Some day we need to get you out to Orlando! The experience will make you question all that you think you know regarding lighting.For an sps dominant tank, I honestly believe that's what is needed. When you have smaller sps colonies, you won't even notice a difference. But once they start growing into medium to large colonies, that's when you will need 1 per foot. I don't care how rich some hobbyists are, $5600 is a tough pill to swallow.