Again, you did NOT read my post.
1) LEDs can NOT have the same "spectrum" as light produced from metal halide; it is a physical impossibility.
LEDs produce light using P/N junctions. P/N junctions are the same technology used in making microchips and create mini-transistors that science has been making smaller and smaller by the year. The material used to make these junctions determines the wavelength of light produced by an LED. Let me say that another way. The wavelength of light produced by an LED is determined by the material used in making the LED. Scientists have found several suitable materials which can create several different LED "colors" and they found that mixing these LEDs can fool the human eye into "seeing" even more colors. What LEDs do NOT do is produce a broad spectrum of light as is created by a metal halide bulb or a fluorescent bulb. LED light is different; it can NOT have a broad spectrum. Period, dot, end of story.
There are numerous studies that have examined how symbiodinium grow under artificial light created by metal halide and even in depth research into the absorption curve and reflectivity of broad spectrum light. In that research scientists found that symbiodinium response seemed to differ with different wavelengths, but no research I have seen has shown whether light from sources that have very narrow wavelengths alters the response of symbiodinium as compared to broad spectrum light. There are more scientific reasons why LED light is different but I'm not going to waste time typing what I already typed above. Prove to me that you are listening at all and go find my previous posts on LED light and then show me the scientific papers that have studied these issues with regard to symbiodinium, and while you're at it why not go find the papers that DO exist on symbiodinium and artificial light.
If you like LEDs that is awesome. This is a hobby and you should use the light you enjoy most. This thread is a place where some very experienced reefers, myself included, are sharing their experience with LEDs and saying that something is different about how SPS grow under LEDs especially given the fact that LEDs are so varied in their application. If you disagree with that FACT then I'm afraid we simply have to agree to disagree.
How 'bout some pictures of your reef while we're at it. Or perhaps some macros of the awesome colors you are getting.
Here are some of mine. . .