I’m not a botanist but in my experience the only time I’ve had Hermes myself is when light was leaking in during the dark cycle of 12:12 that being said I have no experience with auto flowers and I do know that some unstable genetics can have a tendency to herm (I’ve never experienced this only herd of it) but if you’ve got good genetics and a pitch black night time you should have no problems, keep in mind little lights like a led display on a heater or ac can herm them but are unlikely to do so