This thread is a perfect example of why you should never flower from seed.
Sorry but I have to dissagree here. This thread is more so a perfect example of poor care or lack of good neutrients, good soil, not enough containers or simply a new grower that doesnt know better.
Check this link out,
https://www.rollitup.org/general-marijuana-growing/175751-multi-strain-12-12-seed.html Just scan through the many pictures he has there and his grow isnt done yet but its still rather impressive for ONLY 400W of light.
It takes weeks of 12/12 lighting before the young seedlings even think about flowering.
A waste of Vegg time...
Totally agree here. Vegging them for 2 weeks or so on large light cycle then switching to 12/12 after that 2 weeks will for sure give you better results. I had played arround with this sort of thing before I was able to set up a veg/mother room allong with my bloom room. Taking clones/cuttings then rooting/growing them for 2 to 3 weeks in the veg room then transfered to the bloom room will not only out do a 12/12 from seed grow but it will give you a total female garden of a phenotype that you already know is good. 2 rooms and learning/knowing how to clone is by far the more superior way, however yes it does require more resources/risk as well.
I just think that from the looks of that 1 picture that theres problems here that could be blamed far easier than the light cycle. The small containers, multiple plants in the same container are very obvious issues. I would also expect that there could be other reasons such as crapy soil or neuts, and a slew of others. This grower would benifit from some webpage and forum research on growing, so do some reading and keep at it..