I remember hearing that you should atleast have a minimum of 6000-9000 lumens being given to your plant, unless you want it to be complete garbage. You should definitely go over to home depot and pick up some more lights. They have a nice 4ft fluorescent light fixture for about , $6.00 plus the lights which are another 3-4 dollars. for about 20 bucks or less, you can be "alright"

-bringer