there is nothing wrong with the Warm white and NW. It simply just telling you they have more red and green spectrum compare to the CW. In fact, I would strongly suggest use warm white and NW rather than just CW. The kelvin reading for the light is not just base on the any specific LED
, it is the overall balance with all LED
calculate together. If you have about 30% WW and NW but 70% Royal blue, you are looking at a range between 14000K to 20000K. I also don't think the WW or NW is the reason that those people has algae.
The blue spectrum actually helps algae grow also.
The WW and NW If using correct combination would provide a more vivid coloration to human eyes instead of pure blue.