Thread: 20k not blue enough
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Old 03-13-2008, 08:00 PM
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Relatively speaking, XM 20Ks are pretty white for a "20K" bulb regardless. Not surprising since I think their 20K has higher PPFD than their 15K bulb. The best "deep blue" from a "20k" bulb that I've ever seen is still the Radium 20K.
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