m0useanswered grow question 3 years ago They will not be mature enough to flower at week 2.
Photoperiods need to go though a veg cycle to become mature and then will flower when they show sex.
Don't know where these seeds came from as there are custom.
If its from an bag of weed you smoke be ready to kill most of them as they maybe males or hermis in the mix.
You can switch to 12/12 right now and they may stat to show sex or preflower around week 4 or 5.
Best Of Luck!