So everyone on here has their opinion on this.
The ones that do this, swear by it, but a lot of people say it doesn't do anything.
I decided to try it myself and will say that........
After 48 hours of darkness right before harvesting, it smelled WAY stronger then before the darkness. I didn't notice more trichs, which I wasn't surprised because it takes longer then 2 days to form a trich. BUT it smelled a lot, lot, lot more stronger.
So my conclusion, I will continue to do this to future plants
Thought I would share my experience