No no no use regular fluoro's to veg and go nuts with all the lumens great....BUT when going to flowers go to daylight bulbs for bud productions. This is absolutly fact. It's like when in nature the sun is lower in the sky when buds naturally get produced and the plants respond well to this as it is there nature to have an affinity to this type of light when flowering. HPS has both and more lumens which is why people like it so much and why t works so ell. I use compact flouro's and a couple of ge daylight tubes still compact tubes though. The bluer light for budding will not have as much lumens BUT will actaully be hotter to the touch so ADJUST accordingly. GOOD LUCK!!!!