It looks to me that one seedling fell deeper in the soil then the other one. What kind of lights are you using? This is my first grow also but I'm a lot further along then you. I'll help you out the best I can. Good luck with your grow.
I smoke daily about a gram or 2 a day if it's dank. If its mid grade then about a eighth a day. But it has been dry out here for a while so now I only smoke on the weekends. My grow wont be done till dec. so I'll have to wait till then.