only the top grows good...(got pics)

High.it's my first time here in the forum...
anyway,my friends and i came back from a trip in amsterdam
last year befor going to the army (I live in israel) we came
back with 11 seeds we got thare.
we planted the seeds at my place and thare are some problem
that i would be more then happy if you guys can help...
1.as you can see in the picture:
http://albums.tapuz.co.il/Albums/getImage.asp?a=377956&b=0&c=37795620076684358.JPG&d=14.58.62.62.64.60.61.57.55.55.62.61.61.63.59.58.60.63.53.81.87.78.35
the top part grows fine but the other parts of the plant arn't doing to well...
2.we have the plant for more then 4 months and I feel that it's growing to slow-what do you say? is that a normall size for a plant 4 months old?
3.like I said my friends and I are in the army and we come back home
once every two weeks,that means my dad takes care of the plant,
not that he minds,but he also don't have too much knowlge,
so can you give me some importent basic tips/rules so i can ask
him to do...
4.can you give me tips for the growing room (you can see its in the
pic behind the plant)...
thank you very much!!
by the way here are another two pics of the plant:
http://albums.tapuz.co.il/Albums/getImage.asp?a=377956&b=0&c=37795620076684432.JPG&d=63.9.13.13.15.11.12.8.6.6.13.12.12.14.10.10.9.8.4.32.38.29.84
http://albums.tapuz.co.il/Albums/getImage.asp?a=377956&b=0&c=37795620076684512.JPG&d=98.-26.-22.-22.-20.-24.-23.-27.-29.-29.-22.-23.-23.-21.-25.-24.-28.-27.-31.-3.3.-6.119

what type of lights are you growing under, because 4 months is definatly too long, for that size.

we have 1 blue 32 astt floresent light on the top and 2
32 watt floresent lights in the sides...

well, I dont actually have much experience myself, Im still on my first grow, and was asking that question because I am sure it will come up. How ofter does your father water it, and do you use any nutrients?

He waters it about 2 cups every 2 dayes.
and exept the soil that we grow it in we don't put any nutrients...