looks good she is on her way to being a male or female lol
What i do is have a syringe for this stage usually 5th day of veg from germinating give them a very light does pending on size of medium 50 - 100 ml of nutrients 250 - 350 ppm
I like syringes at this stage to prevent over watering , remember roots are growing and looking for nutrients plant is in veg
I read a test while back where a person used different ppm's of nutrients at the beginning you know test of not giving any nutes one at 200 - one at 350 etc for many everyone goes with the let the plant feed its self with col ,,
well test proved that in fact feeding light dosage of a well balanced nutrient in face made a difference in health and speed of growth
usually i germinate transplant water , water then light feed and transplant feed etc