Since Orphek has to custom make these, I think I have my LED selection figured out for an OR120, 36 LED bar. If you don't care how I got to my numbers, skip this section. I typically agree with the BRS suggested spectrums from when they test LED units. I have multiple AI Prime HDs and I like their suggestion that closely replicates CoralLab SPS AB+. So... I rewatched the BRS video on the Orphek Atlantik V4 and grabbed their suggested intensities for that light: Ch1 @ 70%, Ch2 @ 100%, Ch3 @ 100%, and Ch4 at 40%. I then took the LED counts per color per channel and factored in the intensity that BRS suggested (rather than adjusting the power of the LED, I reduced the theoretical "count" for that LED color). Fun fact, if you could have fractions of LEDs, you could achieve the BRS suggested spectrum with 62.4 LEDs. Each count of LEDs then had to be reduced by a factor of .5769 because I only have 36 LEDs to work with, not 62.4. Once all of these were reduced, I then matched the Atlantic V4 LED color to the closest color available in the OR line. 20000K and 5000K were both considered 12000K, 500nm and 525nm were both replaced with 490nm, 380nm replaced with 410nm, etc.
This brings me to my desired LED count compared to the Reef Day Light (RDL) Spectrum that Orphek has configured:
Color -- My Count - RDL Count
12000K - 5 -------- 8
660nm -- 2 -------- 2
595nm -- 1 -------- 4
490nm -- 4 -------- 2
460nm - 13 -------- 8
430nm -- 3 -------- 4
410nm -- 8 -------- 8
I'm surprised by after all of that, I got to an LED count where there's just a few less 12000K and 595nm, with those extra spots allocated to mostly 460nm and some 490. In my first post on this thread, I couldn't decide between a Blue Sky or UV/Violet to be paired with a Reef Day Light. I think I've achieved a middle ground with the custom LED count so I can get two OR120 with the same LEDs.
So after all that, what do you all think of getting rid of some of the 12000K and 595nm and replacing them with 460nm and a few 490nm? (Besides that I'm insane but without them being adjustable, I want the spectrum to be close to what I like without having to add other supplementary lights.)
I'm anxious to talk with Orphek and see what the experts there have to say as well.