No, 12 hours of dark is the minimum, safe period to maintain flowering in a photo period cannabis plant.
I have considered a 14/12 or 16/12 schedule before, but have never tried dew to the loss of a 24 hour cycle. Please keep us informed if you experiment, but be prepared for unexpected results, most likely hermies.
so much proven information on this subject, just dont do anything but a regular uninterrupted 12/12 or you can be sure to expect problems. keep the schedule regular and never deviate from it. want more yield? keep it close to the light bro, as close as u can without burning it. use the back of your hand under the light as a guideline. if its too hot for the back of your hand, its the same for the plant. and keep a fan moving steady air, not a hurricane...across the tops of the plant under the light...and BE PATIENT! I agree with this guy all the way...
kids home bro! i only grow one seed at a time! every plants needs a different grow im only smoker! give my best to the one im running i dont like to bite more then i can chew thank for the advices tho!