Why would you turn down actinics when day lights are on?
Corals have a 6 hour useful photo period. That's what they can benefit from at one time without rest. Any more than 6 hours and your growing algae and really any light after that should be for your viewing pleasure.
People will debate lighting to no end. I would suggest 6 hours at your most capable(everything on) light setting, with a little light (actinic) on each side.
Someone suggested 6 hour photo period followed by 6 hours of darkness and another 6 hour period/6hr dark again done in each 24 hr period to try for better growth. I doubt it worked because they never posted again that I know of.