I love how this thread always goes back to the science of (LED) lighting and corals. I am currently testing my first frag in my 2-3 month old tank....
The guinea pig is a frag of ORA Hawkins Turaki bought from an LFS using T5 lighting. It is set within the bottom 3rd of my 18" deep Solana 67 XL tank. Today would be day 3 and so far looks the same (if not, a little more green).
My light cycle ramps from 0% to 45% white, for a peak time duration of 3 hours. RB peaks @ 85%, Blue @ 75%... then ramps back down. Entire light cycle is 14 hours, but only 7 hours of that is white at or above 30%. The rest of the 7 hours is dim lighting for dusk and dawn.