Without time to precisely cover and uncover the lower branches each and every day. Was wondering if it is ok to 12/12 (via timer)the entire plant for pre-sexing and once determination is made, return to veg. state.
Not the best idea. This will stress the plant considerably, and will set you back a week or two. Preflowers form usually within 4-6 weeks. So I recomend leaving them untill you see preflowers.
Thanks for the reply - knowing that I wouldn't be consisitent in uncovering or covering, I began 12/12 a week ago with the entire plant - I may have screwed up, as I was planning on returning to 18/6 after sexing. Other than the additional time will this have any other negative repurcussions?
it stresses the plant and might cause it to go hermie. how big is the plant and how old and from seed or clone? i would guess to just leave it in flower. u should have just let show sex naturally