if its only two weeks old i doubt its showing sex yet. do you know the strain? is there a reason why your giving it 15 hrs of light? some kind of experiment or what? 12 hours is normall sufficient.
yes. less light makes it stretch for light... could be why it's tall... usually it's 18hrs. light, 6 hrs. dark... the more the better though... IF you ARE trying to flower... go for 12 hrs. light 12 hrs. dark
Hello.
I also have plants at almost 2 weeks and they are looking pretty dreary (i suspect its nutrient burn) but is giving them 24/0 too harsh, or don't they mind?
Btw how tall is your plant?
Cause maybe 15 is the way to go...
J