wrong photo-period!!

I just note today that I program the photo-period time wrongly. I think that I m doing like 10 day 14 night. This is bad or not?. Im going change today this to the normal 12/12. thanks!

10/14 is ok. Anything with 12 hours or more of darkness is fine. MJ plants pay attention to the dark period more than the light. You will get less yield at 10/14.

If you want to adjust to 12/12 just move the timer by half an hour each day for a few days

I cant just change it to 12/12 in a sudden ? thanks

yes you can if you want

Yes you can and it will probably be fine. MJ plants can go hermie if their photoperiod is disrupted but usually we are talking about something much more serious than this. I doubt there's any real chance of that here but if it were me, I would be careful anyway and make the change incrementaly

Just switch to 12/12 as zvuv said it's anything with 12 hours of darkness or more as that is when the ladies do their thing. More night period just means that you have been giving the plants less light overall until now so you may lose a little on your final yield.