when its time to harvest ive read so many people sayind i should given 24 to 36 hours of darkness.....

ive read so many people saying they give 24 to 36 hours darness before flowering to speed up the flower process and then 24 to 36 hours darkness at he end of flower can some 1 please advise me on this......

then agian i also read it only speeds the flowering up by 1 to 2 days and ther are risks of stunting and hermie...

what do u guys have to say about this