Help plants yellowing!

Hi i have three plants growing in my closet with 2 300watt 2700k cfls and two 150 watt cfl 2700k my plants are almost two weeks old. the are tall and lanky because i left the light to high in the begining. Its my first time growing. i have a small fan on them as well. they were looking really good for awhile but two of them started to yellow on the fan leaves a little. i thought it was over watering so i backed off on the water. no improvment. can anyone help me out. ill post up pics when i get out of work tonight.

sounds like a nitrogen def. feed them some veg nutes, which are high in nitrogen.

ok thanks. ill try that out. i bought the general organics starter kit. idn if anyone has tryed that but thats what i was told was good for newbie growers. by the way the strains im growing are sour diesel, chars, and some type of haze my cousin gave me.