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Photobiological Active Radiation, or PBAR, designates the range of wavelengths of light shown to effect plant growth, from 280 to 800 nanometers (n...
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CRI, or Color Rendering Index, is a quantification of how faithfully a light source reveals the relative color of various objects, as perceived by ...
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What are lumens, and are they useful for evaluating grow lights? Lumens are a measure of luminous flux, or the total amount of visible light radia...
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Yes, our grow lights provide complete coverage of the plant biological active radiation spectrum from 350 to 750nm, including UV and IR. Our Phyto-...
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Noah and Kevin discuss the term "Full Spectrum". What does this mean when referring to cultivation? Is it a real term or a marketing gimmick? You... -
Is it normal to see purple streaks on the stems / petioles? No, LED lights do not cause any kind of nutrient deficiency; purple streaks on stems a...
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Can Black Dog LED grow lights be used for both vegetative and flowering growth? There has been a popular belief that plants need more blue light fo...
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Ultraviolet (UV) light has a wavelength shorter than 400nm and contains more energy per photon than light in the 400-700nm Photosynthetic Active Ra...
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We have a lot of experience growing a diverse range of plants under different combinations of LED grow light colors. In our (and others') experimen...
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What about these 10-watt white LEDs? First, it is important to know what "white" light really is. White is not a spectral color, but rather a combi...
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The simple answer is: deeper than any other grow light of the same wattage. Unfortunately, there is no single answer to exactly how deep our lights...
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Photosynthetic Active Radiation (PAR) designates the spectrum or range of colors of light from 400 to 700 nanometers that plants are able to use fo...
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