Photons are photons. Their source is immaterial.
Most grow lights have a "full spectrum" or "sunlight" spectrum but the exact spectrum varies. You can check the spectrum on the manufacturer's website or one of the third party sites that review grow lights.
In terms of the stages of growth, blue light inhibits cell elongation so it's used in seedling and veg to keep plants compact whereas red light encourages cell elongation so it's very useful in flower. Grow lights are designed to provide photons over a broad spectrum.
To get info about the spectrum of the light that you're using, contact the manufacturer of your light.
To Break down your answer better, yes photons are photons...
But the source does matter.
Some sources that produce photons do not produce enough photons. Almost all full spectrum lights are not like the sun... No in fact they're only about 70% of the Sun available Spectrum in the best lights that are available. Most only cover par...
To really get the full spectrum you need to go deep UV and far red near the infrared to get the full benefit of of the Sum in artificial lights.
Most LED manufacturers don't provide that extra bandwidth into the far red and deep UV in their lighting Products.
Adding those spectrums to your grow at pacific times during different life stages of your cannabis plant will produce a better cannabis. It is known adding more blue UV near the end of harvest is known to produce higher quality cannabis. it will produce more tricones and stronger Aromas and better flavors...
thanks so much…yea, I’m watching the bruce bugbee vids pinned up now. good stuff.
The doctor will teach you much. He's doing thousands upon thousands of tests. As he's one of the few in America that's allowed to test on cannabis with federally licensed. Most everything I know on light I've learned from that man. Although he doesn't play with it like I do... because he doesn't smoke.
But I've used his testing results on quite a few different grows now recently with different light recipes as he spoke of in some of his educational videos. Or I've used far red spectrums in veg and more blue in flowering and finishing with deep blue UV in the very end. My results to say the least were far better than the regular way.to grow.
The reason I say this is because I work for a commercial farmer. And I use his exact same clones. And I compare my 100% living soil organic grow to his synthetic grow products and use his for a Baseline.
The reason I say it's better is because he said it was.
Him and the crew that work there also. Not 1 occasion not on 2 occasions but on several occasions with several different strains of exact same clones that he has runing. In Side by side blind taste test if you will....
So Yes there is a difference and there is certainly a difference in the producer of the photons. As I said in the beginning "some sources of photon are better than others".
I use a 315 CMH lights. So I can use spectrums from very deep UV 10k all the way up into near far red in the 680 nanometer range. Where then also supplement with far red with LEDs in the 730 nanometer range to add that extra far red.
I DIY my own lights. I have several recipes that I've worked on with several different strains that had various outcomes. But all the outcomes have been better than the original outcomes from the commercial farmer. So I'm on to something. I write all my recipes down and they're documented here in my journal on this forum. So anybody can follow them.
I suggest if you do any of these tests you do them side by side. And I mean by that if you want to know the difference you can run your regular lite Spectrum in tent and your light recipe Spectrum in the another tent. Using the same genetic clones. With the same soil or synthetics same air same everything except for the light would be different.
These tests may not be conclusive but they sure as hell are in the right direction.