Have you looked at nichia optisolis? If I remember right their 5k is almost an exact match to the sun's par spectrum. I'm curious what these companies use as a comparison when they say their lights are the best. If they go against the same wattage as 3k lm301b diodes and they are having better results cool. I think sometimes people get too scientific with spectrum. output is the most important thing that's why it took so long for led to actually beat hps even with superior spectrum led lost to hps until led got to a point where it had more ouput per watt.MARS HYDRO for da Win!
Anyhow ever hear of a company called Soraa? They dont make grow lights but what they do make is white LED lighting with very high CRI, (95 CRI and a high price tag to boot). Very close to natural light. The trick for them is they don't use blue leds to excite their phosphor blend, they use UVA. I think Veloya is adopting Soraa's tech with the whites they use and/or have a custom phosphor blend for their white leds to get UVA in their spectrum. And Fluence and the other companies I mentioned must be doing it too since they all have some UVA in their light. And you don't need much since there is proportionally little UVA in sunlight.
https://www.soraa.com/about
Soraa pioneered full spectrum color rendering LED light, the heart of which is our proprietary LED technology manufactured in California, a technological breakthrough that we further enhance by focusing on every aspect of producing the most natural light possible.
And to anyone that thinks just adding some spectrum is an automatic benefit that will increase biomass and quality, well I got a bridge in Brooklyn for sale for ya . Adding too much red can decrease biomass. You need to do some experimenting with the whites you're using which is what Veloya has been doing over the 2 or 3 years they spent experimenting and tweaking their various spectra for cannabis. Watch that video I posted earlier, they talk about that. Sorta like pharmacutical medicine.
Rhetorical question: If I have a 125 l/w grow light that produces the same biomass as a 150 l/w light and is higher in THC and cannabanoids than the 150 and therefore I can charge more for the weed produced, does efficacy, (efficiency), matter anymore?