you need to get those bulbs alot closer to the plants. try for no more than 3-4inches away from the tops, otherwise those plants are gonna stretch like mad. flourescent light has a penetration of only 4inches! if you have a fan blowing you can get them practically touching the plants without burning them. just be careful!

edit:
also you NEED PERLITE mixed in your soil(ratio 32part soil to 1 part perlite)also if you are using a peat based mix you will need to add 1-2 tsp of dolimitic lime per gal of soil or you ph is gonna be way to low and that will cause all sorts of problems such as various nute lockouts. i shoot for a ph of 6.4.