Hi and good luck on all your future grows. I just wanted to state that if this plant is being so problematic at this stage in it's life you are more likely to end up with a male due to stress. Raise your soil height for better airflow and lower you ambient temperature as well as increasing your humidity. The leaves do look very dry and that will cause a canoeing effect. Other than that - there is a strong possibilty that you have poor genetics. Try replacing your soil completely and light watering. Keep an open water container next to your plant as it will increase humidity. Good luck and keep us posted.

I would have suggested chlorosis as being the culprit due to light leaching but it looks like you are using cfl's and I've never seen a cfl bulb cause leaching due to it's incomparable output when compared to gas lamp such as MH or HPS.