So my take on this could get wordy. Two points
- Phosphor coated leds do blend as a colour. If I build a board in equal parts 3000k and 4000k I get CCT of 3500k
- Monochromatic no so much, If I have 730 and 660nm on a board, spectrally I will have two SPD peaks of 730 and 660. Red and blue will look burple but its photonic performance will be based on the performance(SPD) of each red/blue chip
My point is I dont know why people add multi coloured whites onto a board and try to sell it as a full(er) spectrum, its just isnt, the CCT becomes the average of the all the white leds and their specific spectrum, so the question then is, if I end up a with specific white phosphor based spectrum, using multiple white colours, why didnt the board just get made with leds in that spectrum
The other arguement might be well if I use higher efficient cooler colours wont my fixture be more efficient, that would be true but of course most of these boards also have lower eff warmer colours, so you also end up with an avg eff based on leds used
there is no free lunch
to answer your basic question yes we can make strips, boards in any spectrum you want but you need to be realistic about what that means. For Veg I would use a base 4000k led with an option for 730nm to give you some stretch/shade avoidance capacity, but will be strain dependent
Samsung LM351 Deep Red does not have the performance of Cree XPG-3 Deep Red. Uva in Veg is useful but would only use UVB in flower
Hope that helps
cheers