Whats the wattage on those bulbs? I mean you could grow with it, but you wouldnt get great results, sounds like you got a 13w cfl or maybe even lower. Could you get some 23w bulbs? When growing with cfls, from personal experience I would tell you dont go lower than 23w bulbs. The lu/w ratio isn't that great
Home Depot, $20.00 T8 shop light. add the 2 $7.00 Natural Sunlight bulbs. Wrap the reflector with foil or mylar, hang the light(s), plug em in (120v cord already attched) and your ready to go. Thats how these babies started til I went and purchased a full T5 system.
More photos in my gallerie. The lights seen in the background on the bottom photo are my old T8's from home depot, they worked! I grew start to finish on three plants with that light. it took a little work but it was worth it. Cheers & Good luck!