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If one day you "make" a LED fixture with all those wavelengths trying to emulate Iwasakis' spectrum chart (or any halide in the world as you see on graphics), you will still not have a metal halide, but a LED fixture. You will not be able to get to the amazing intensity and distribution of those wavelengths and photons like halides to. Ever! Simply because they are not the same animal! The way the light is produced and distribute are tremendously different. One just can't substitute the other, practically. Never will! I understand your passion for the colorful graphics and you try your best to prove things here, but it doesn't translate in the real world. Halides are still the bomb of all lights for any reef system, as for the best representation of natural sunlight spectrum and distribution with the right fixture for the application.Nobodys built one... ever AFAICT.
There was little incentive.. the "blue craze" w. Royal blue leds drown it out..
OK using ONLY science..
Here is a Iwasaki killer.. See any fixtures even CLOSE to emulating it?Whites alone are capable of 18000 lumens easily and as "full spectrum" as you can get with one led
In "my opinion" the poor quality whites and not understanding the addition of cyan and some other band ratios is the major factors dooming most LEDs from being "equivalent"
At the time the build would have been fairly cheap.. in the $40o range. May have needed fans .
Point is using physics and yes somewhat ignoring UV/IR though the 385's add some.
The Hylux I believe was the "terrestrial" 6500k