This is an interesting question, thanks. In my mind, the chosen spectrum determines at least some of the physical structure of the plant. A bluer spectrum leads to leafier, denser flowers with the possibility of additional resin content. A more HPS leaning spectrum leads to slimmer flowers with lower leaf content. So, to a certain degree, you can use different spectrums to change the growth of the plant regardless of seed source.
Where I see the difference is in the naturally thicker flowers the indica/WLD types produce. Without more penetrative lighting, you literally end up with a fat flower which is only mature on the outside. Once you break the flower open you can see how green and undeveloped the inner trichomes are. While this can be a plus for some strains, this is not what I want from an LED light.
Fortunately for me, I prefer sativas and flower very few big fat flowers. The fat flowers I have already grown have pushed the limits of the LEDs I'm using. The quandry is the indica/WLD usually requires less light than the sativa's... so I'm thinking there's a 'penetrative' wavelength band which can be beefed up for thicker flowers. What do I know though, yeah? lol
the uv and IR strips might be available in the next half year.
