True? Some white LED's put more blue light (430nm-ish) than ACTUAL blue LED's?!

A quote from a seller on eBay who specializes in UFO-type LED growlights:

"Evolutions in the white HO LED actually produce more blue than blue LED's."

Does anyone have any evidence to show this is true? And secondly, I'm assuming this would be in the higher Kelvin range of cool white/blue (5,000k and above).

Love to hear input from anyone!

~jessie
 
Quick Follow Up:

A colored LED has a specific light wavelength, such as a blue at 630nm (nanometers). But when it comes to white LED's, I'm running into trouble customizing my own light panel.

White LED's are rated in Kelvin. Unless I've made a mistake, Kelvin is the *average* color temperature . . . and unless you have a SPECIFIC Light Spectrum Graph for a SPECIFIC white light, you'll have only a ballpark guess of what wavelengths are being hit the hardest by that specific white light.

For example, a 5,000-10,000K LED means that the average color temperature is in the lower wavelengths (the blues), while a 1,000-3,000k would be more composed of long wavelength (the reds). But without a light meter that can test various wavelengths, we'd have very little idea whether a specific white light is hitting the optimal lengths.

Consequently, the claim in my original post about the efficiency of white LED's would be easy to test, if you had the right type of light meter -- which is probably HUGELY expensive.

It's about a billion-to-one, but does anyone have a light meter capable of measuring specific wavelengths? If so, I'd love to send you some white LED's and have you test them and post the results for the folks who are interested in LED grow lighting.

BTW, please correct any mistakes I've made!

Thanks,

~jessie
 

newworldicon

Well-Known Member
Why don't you ask led manufacturers or distributors what they are using and mimick that, piggy back their research. There are many very good LED panels on the market.
 

growalater

Active Member
Acoording to HTG new Gen 3 Ufo, only Marjor colors that help the most are red and white with a little blue up in there. They say orange are garbage
 

okcomputer

Active Member
From my research, i've learned that white LED's are actually just blue LED's with a phosphor coating. So that could explain the extra blue spectrum
 
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