Alright so is this color change brought on by a mere reduction to “x” degrees at night, or can it simply be brought on by a night fluctuation of “y” as it relates to day temp. I am running 83-87 day temps depending on what side of the house sun is on and around 73 at night. Would this work or would I need it colder. Not the end of the world either way but I am growing three purple strains, would be a bonus to be able to bring that out.
Also, what timeframe is relevant…only last couple weeks of flowering, right?