i was just woundering how deep led's are able to keep sps lps corals alive at? I know it depends on bulbs and watts but lets say a 1watt xp-g cree and 3watt. Also i have my lights about 3 1/2" above the water will this effect their efficiency? The led's i'm thinking of are whatever type are in truelumen pro's 12k and 453nm blue, and the new ecoxotics panorama pro 12K's which i believe are 3watt's ran at 1.7watts but dunt know truelumens wattage.. I have the rgb too from ecoxotic if anyone know their efficiencey compared to the 12K's or any of their 12" pro modules that would be great and if the reflectors actually make a noticable difference?