Hello, I have done a bit of research and experimentation with different harvesting methods and there is a really good utube video about the lab results of darkness when harvesting. https://youtu.be/C-Ns7j0WIJM The video is very interesting it explains a lot about this topic and how the chemical changes happen within the plant when exposed to longer periods of darkness before harvesting but there is also another major factor as well and it is the temperature during the whole darkness/harvest & cure process if your going for max terpenes you have to key in on the evaporation point. Cheers Dan