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Whats the difference between grow spress and spand full#

“Our LED lights replicate the spectrum of the sun”

Whats the difference between grow spress and spand full#

“Our LED provides the optimal full spectrum which provides plants, veg and flowers in all stages of growth with everything they need from natural sunlight” And many manufacturers try to convince customers that this is true with comments such as: The sun produces white light, and plants do best when they receive all colors of the visible spectrum, so it seems reasonable to conclude that the best LED lights are white lights. Even with these limitations, they are becoming a popular option for grow lights. This means white bulbs produce less light than equivalent LED bulbs without the phosphor coating. Whenever light is converted to other colors, some of the intensity is lost during the conversion.

White LED bulbs would seem to be the best alternative but there is a catch.

This is similar to the way florescent bulbs work. Such bulbs usually use a blue light which hits the phosphor and it produces white light. Mix enough different colored bulbs and you have white light.Īnother way to make white light is to coat the bulb lens with a phosphor compound. Since a typical fixture contains many bulbs, it can be customized to produce different amounts of each color. More advanced units will include yellow and green bulbs. One solution for providing white light is to combine different colored bulbs into one fixture. LED with phosphor coating producing white light very similar to sunlight, image by Yuji LED This can get very complicated and is really only important for commercial growers where they want to maximize results.Īs a general rule, plants do best with light of all wavelengths, but they don’t need equal amounts of each. The best color spectrum also depends on the type of plant you are trying to grow. Another benefit of far red light is that plants exposed to this wavelength tend to produce larger leaves than those not exposed to light in this spectrum.īest Color Spectrum Depends on Your GoalsĪs plants mature and go through their growth cycle from seedling, to adult, and then flowering and fruiting they use different color spectrums so the ideal LED light is different for each stage of growth. In addition, exposure to IR light reduces the time a plant needs to flower.

Far Red Light (720 – 740 nm) also passes through dense upper canopies to support the growth of leaves located lower on the plants.

Green Light (500 – 600 nm) penetrates through thick top canopies to support the leaves in the lower canopy.

Light in the blue range also affects the chlorophyll content present in the plant as well as leaf thickness.

Blue Light (400 -520 nm) needs to be carefully mixed with light in other spectra since overexposure to light in this wavelength may stunt the growth of certain plant species.

This wavelength also regulates flowering, dormancy periods, and seed germination.

Red Light (630 -660 nm) is essential for the growth of stems, as well as the expansion of leaves.

NASA has done extensive work on the light used by plants and they have determined the following. It is true that blue and red are important and represent most of the light used by plants, but other colors, including green and yellow are also used for photosynthesis.