do you know the kelvin temp of those bulbs? for veg you wanna aim around 6000 or so and for flowering you are gonna want some with a little more red in it like 2700 or 3500 .. on my firs grow i flowered with 2 42 watt 3000 lumen bulbs at 2700 K... and got a decent yeild..now im using 4 of em on one plant.. check out my grow..http://boards.cannabis.com/showthread.php?t=70383