I have 10 65watt lamps of varying colors over a 75gal and have many sps throughout the tank. A crocea and a maxima clam. All grow, all are colorful. But saying this I have 2 250watt ballasts new in box, just waiting for me to have time to set them up. My sps have been under pc for about 1.5 years. I find I stay on top of water quality and that helps with my tank.
Jason