I was planning on putting the it outdoors once it reaches 4inches. I think I will look into getting some cfl bulbs with the same specs as what i`ve got. I will look at my local shops in a day or 2.what do you plan on using for lighting after 4 inch? also a 2 ft tube is wasting alot of light, your plant would benifit more from a CFL bulb with same specs as more light would hit the plant.