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BraenDead, that is correct. I forget exactly what PPFD stands for. CCT is correlated color temperature. It basically gives you an idea of what the color of the bulb is. Lower numbers indicate more yellow while higher numbers indicate more blue. I think it is pretty similar to kelvin where 10000 CCT = a true 10k bulb. The CCT rating for the bluer bulbs (14K, 20k) is usually off the scale and is listed as NA.
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