http://boards.cannabis.com/grow-faqs...ut-lights.html
this should help.
Chronic Chrissy Reviewed by Chronic Chrissy on . Send in the clones Cloning how do you do it? some say cut them then give them 6 hours of darkness for good root growth. yet...... some say 24 hours of light is best.... how do you do it? is there a right way? Rating: 5