New Grower Dual Spectrum Light

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Can someone please explain to me the difference between a Dual Spectrum Light and a full cycle light like the ones from California Light Works?
 
I'll have a go :)

A dual spectrum light (cfl or hps) will have 6500k and 2700k for your veg and flowering.

A full "cycle" light has the spectra covered for a full grow (including veg and flowering) - The other options you might find with LED is specific spectra for Veg - and Flower

So essentially they're the same thing - but a full spectrum LED light will have more than just 2700k and 6500k

My LED for example is full cycle and contains these spectra and wavelengths


(Deep Red 8pcs,Red 2pcs, Blue 2pcs pcs, Cool white 2pcs, Infrared 1pc)


EPILED 630nm, 660nm, 725nm 460nm, 5700k
(dont ask me which wavelength is which colour .. i don't know ^_^)
 
oh and plus this !

I emailed the manufacturer of one of the best CFL's out there (plugandgrow.co.uk) to ask them why they don't manufacture DS CFLs.

They told me that, due to the way they run, DS CFL's don't utilise the wattage as well, so the performance is under par. (no pun intended LOL!)


steely
 
(dont ask me which wavelength is which colour .. i don't know ^_^)

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Thats a chromacity graph. You can use it to identify colors by their temperature in kelvin or their wavelength in nanometers. I referenced it a bunch a while back when I was reading up on the subject.

Vegetative growth benefits from additional light in the blue-er side of the spectrum, so high color temps and short wavelengths... near 450nm.

Flowering plants benefit from extra red light... so lower color temps near the 2000's and longer wavelengths of light; 600nm and higher as there is sufficient evidence that infrared light increases the production of essential oils.

Hope this helps.
 
oh, p.s. the broader spectrum you feed your plants, the happier they'll be. Think of photons like vitamins for plants - they need all of em. Well just the important wavelengths anyway. Photosynthetic pigments like chlorophyll a and b and carotenoids all process light differently depending on which stage of growth you're at.

With indoor growing you're attempting to replicate the sun... A mono colored cfl will support photosynthesis and you can grow from seed to harvest just fine, but if you know the plant would benefit from a variety of colors, you might as well apply that knowledge and reap/smoke the reward.
 
Weirdly, NASA did some experiments, and it turns out that plants DO use green light.

I think it helps produce antioxidants or something i'll try and find the article.


Cheers,

steely.
 
Thats why some led manu's are putting white leds in their grow lights as even moderate amounts of mid range radiation sustains growth. And they're generally cheaper, but thats a dif story.
 
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