its a bagseed. and yes i have to add more soil to it. i just cant believe how quick this is growing. i just looked at this other guys plant that is also at day 13 and its about half the size of mine. i dont understand how its growing so fast.
some plants genetics are much better than others... just depends. Make sure you dont use nutes too early, but I think you are going to have a nice plant there my friend.