when i got my corals i decreased my time so i didnt risk the chance of light shock then i slowly increased it until its like 12 hours, i turn on the dual actinic ones first for 30 minutes then i turn em all on, then i leave em on and an hour before i go to bed i turn off the daylights and let it be like a sunset or w/e for 30 minutes then i, just me but i put white cloth under the light far down so it doesnt catch fire and then i turn on the daylight and trun of the actinic and its darker but a different shade like idno the fabric is tinted orane so then i leave that for a smooth transition to my moon light so it doesnt just click off like *boom* and its dark lol... if that made any sence at all.