I grew high-quality smoke for almost 40 years, using only fluorescent tubes ... every now and then, I added more tubes ... when I got up to 12 tubes (480 watts), I finally switched to HPS lamp ... the pot will have more yield with the HPS, but the quality will be the same ... on a budget, go to WalMart, etc., use the GE 'Cool White' lamps, like you have now, for vegging, and switch to the GE 'Kitchen and Bath' tubes for flower (they are the warm spectrum) ... you will have good results with them :smokin: