Im going to help you out because i made all of this mistakes you are making right now.

Cheap grows are not hard to make work but they take a little finagling.

First you are going to need 2 sets of bulbs.. some that are cool light and some that are warm.

you will need about 3 bulbs per plant for veg i would suggest you get something that is 5000k or higher. from what i can see it seems like you put your lights way to high up. your plant is stretching its little heart out to get at that light. The cool things about florescent lighting is that you can almost put it right on your plant. You really should be doing that. once it gets to a mature level and is big enough you can start flowering and this is done by taking your lights and putting them on a 12/12 light schedule. when you go to this i would suggest you switch to 2600k lights.

reading the lighting section will really help you i would suggest you do that too.

Your space seems pretty open i would suggest making it into a smaller space with a white or reflective surface to maximize your lighting. get a fan on it because that will help your plant bulk up.

I had a real problem with over watering and the pot your using might have that same issue if it doesnt have holes in the bottom.

you can still make this work but it will take a little more time and upgrading.

your plant can still do alright. but yeah it will not be the best. I did a shitty job my first time and still ended up with quite a bit of weed. Mine was cheap but took a lot more time then it should have. dont worry stick in there and good luck. plus most the people here are professional growers they know a lot and make the best bud they can. me personally im the home brewer that just wants to get drunk for less then he is paying outside.