Hey
Jesseindahouse
Hope everything is good with you man. If you don't know him, I would go look into Bruce Bugsby (Apogee Instruments). He's a horticulturist who does a lot of research for NASA's space growth programs. Most of the stuff you find on youtube and forums with regards to spectrum is a lot of stoner knowledge and marketing from Chinese light companies.
The major difference between red and blue light is blue's stretch while red's keep the plants shorter. Red's are also more efficiently absorbed by the plant.
Overall, I would recommend a full spectrum. Bruce has done multiple experiments with cannabis plants under different spectrums and testing their outcomes - terp content, cannabinoid content, photosynthesis, etc. - and says that it does make a difference but it's almost not noticeable. His grows are also far more dialed in than anything we can produce at home so us worrying about the spectrum is really wasting focus IMO.
Just give your plants some strong light and they will do well no matter the spectrum. I recommend full-spectrum because it makes it easier to diagnose issues and it makes you smile when you look at them every morning basking in that beautiful light.
