Quote:
|
Originally Posted by jppurchase I'm glad that you like them, but I'm not sure how your plants feel about them. This tube has a CRI of only 67 (CRI is a measure of how closely the light matches natural sunlight, which is 100). At 67, and given the color temperature of the bulb, I'd guess that it is very blue and lacks red.
James Purchase
Toronto |
James actually, the 9325K bulb's number refers to the extrapolated value of the bulb. It doesn't means that it is blue and lacks red. The reason for this is that the kelvin temperature refers to color of light a black body emits when heated. Since this is an incandescent style of light the colors that 3 different color phoshors (from a fluorescent lights) produce canot be directly corelated to the numbers of the Kelvin Scale. Hence the 9325K instead of a straight number like 6500 or 6000 or 5500, or 10,000K.
Look it up on Wikipedia if you would like
Anyways, the light is fine for growing plants, it just has a lot of red and blue light (what plants like) compared to the yellow and green spectrums(wavelengths the plant doesn't use as efficiently). This is why the bulb appears "pink" or "purpleish".
Ken T.