Im still a rather new person when it comes to growing but when i started my current plant i put nutes in the soil before the seeds and diluted the crap out of the nutes for first water.. Then slowly concentrated the ammount of nutes in the water untill i got to the correct ammount to give each feeding.. Dont just pour it all in at once.. let the plant get used to it slowly... Also may want to move your lights closer to them.