I have had this happen many times and it boils down the strain for the most part. You can do the 24 hr dark cycle and then go 12/12.

My big problems happened much later into flowering, usually when its early you have the best chance to save them.

Even if one throws out a ball or two you can pick them off and sometimes nothing else happens and its all good.
Hempsouth Reviewed by Hempsouth on . 2 Weeks In & Timer Fails Please Help Stat! Hey Yall! first post here so hopefully this can get resolved in a hurry.... I will cut to the Chase and thank you in advance! I have some ladies who vegged for a couple of months, all about three feet tall when i switched them to 12/12. They are been growing strong for about 2 weeks in flower to the day and look amazing!! However today at three hours into their night cycle i discovered that one of my lamps had not been turning off! As u can imagine i am seriously stressing out. In all Rating: 5