well i got the new light all hooked up and i have to say i am liking the hps already. my box is so much cleaner makes watering and tending to a whole lot easier. running right now at 50% and the temps are staying pretty steady and within the range that my cfls were running at. the only thing i am having a question on is with a dimmable ballast or with a standard one do people notice that the light seems to go from orangish hew to a more of a whiter hew? or is it that my eyes are just adjusting to the color?