I recently made some adjustments to my lighting schedule, opting for a slightly lower intensity and shorter period of maximum daylight. I recently had some SPS lighten up, but after a few weeks using this updated schedule things are back to where they belong.
Note that your schedule employed will need to be adjusted as the corals grow and as your nutrients fluctuate. I have found that SPS corals go through periods of rapid growth and then settle down for a while before sparking back up again. Thus, it is important to notice these changes and adjust as needed.
Below you will also find a schedule for my MP40’s. I have had quite a number of people requesting it so feel free to give it a go. You will need to adjust the strength of the schedule based on your particular setup.