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  1. K

    Is 6500k Cree CXA3590 too blue?

    "Supra said Since the 6500 is higher in blue, and blue photons require more energy to emit, there will be less photons per PAR W (a lower PPF)." I don't think a 6500K LED would require more energy, since LED's actually produce blue light and use phosphors to affect luminescent down conversion...
  2. K

    DIY COB LED Calculator

    Just ordered some cxb3590's, they are $43.5 apiece.
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