Light schedule

THANKS FOR THE INFO IT WILL BE PUT TO GOOD USE

i'd let the intensity of your light determine hours of use with an autoflower. You don't have to worry about length of dark period with autoflowers. The best way to compare apples to apples is to use DLI. This is because intensity of lamps and hours of use vary per person. DLI is the sum of that per 24 hour cycle. Without nitpicking, "X" DLI over 12 hours should produce the same as that same X DLI over 16 or 18 hours. ** larger the gap, greater the chance length of darkness causes a bit more stretch? or some other impact... but assuming nothing crazy different, it should be roughly the same. Now, "max" DLI will be relative to environment and genetics a little bit too. Temp, RH and atmospheric CO2 will determine how much you can give per 24 hours. This may require some trial and error to get it dialed it as best you can. Light stress causes stunting, maybe some wilting, maybe some spots etc... when plant is growing it's best, good chance you got it where it needs to be. Internode length will be a good guide. if you see it is really droppy the last 2-3 hours of lights-on then reduce hours of light by 1 hour... Like i said above, this is all proprtional... so if you had it worked out well for 18/6... just stay there and keep it simple. if you go to 12/12 for a photoperiod plant, you want 150% more light over 12 hours to match what you provided over 18 before (assuming it worked well before)

12/12 is totally fine with autos, you might actually get stronger bud that way. After all the light breaks down THC and terpenes. Hope this helps ! 🚀

For flowering you want at least 12hour of ininterrupted night for photoperiod not autos. So yes 12/12 light schedule is the way to go for photoperiods when flowering. As your growing auto you can keep your light 20/4 18/6 or 16/8. Happy flowering