Your right no lowrider autoflowering can be cloned they have around a 8 - 10 week life cycle then thats it.
you dont need to chnage there light cycle at all you can leave it on 24 hours if you want it wont make a differnce to it the lowrider is designed to be in a vegative state for around 2-3 weeks after which it will suddenly go overdrive and start flowering like fuck so if your lowrider hasnt started to do this then it isnt a lowrider .