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General Questions

What are the benefits of LED grow lights?
  1. Customized spectrum for different plants, better growing
  2. Lower heatload, to reduce HVAC costs
  3. LED grow light releases less radiant heat,,can close to plants, save space space
  4. Longer life, 50,000 hours
  5. Use less wattage, saveelectric charge
  6. Environment friendly, No mercury
  7. Smart control, dimming, timing control
What is PPE, PPF and PPFD?

PPE -Photosynthetic Photon Efficacy, the unit for PPE is µmol/J

PPF – photosynthetic photon flux,the unit for PPF is μmol/s

PPFD – photosynthetic photon flux density, the unit for PPF is µmol/m2/s

PPE refers to how efficient a horticulture lighting system is at converting electrical energy into photons of PAR. The higher this number is, the more efficient a lighting system is at converting electrical energy into photons of PAR.

PPF is a measure of the total number of photons released from a light source, PPE multiply by wattage can get PPF data.

PPFD measures the density of these photons falling on a particular surface, Adjusting the height and density of light fixtures directly affects the PPFD data, and directly  impact your crops growing.

How far away should Led grow lights be from plants?

Should consider different factors, like led light wattage, beam angle, coverage area, also for different plants and different phases, better to use different distance.

 

Normally, lower wattage, closer to plant, like vertical farming for Greens, typical use 8″-24″ distance; But for greenhouse top lighting, typical use 36″-46″ distance;

 

Plant growth is typically divided into three phases: Seedling; Vegetative; Flowering .

Seedlings need very little light therefore can use big distance, vegetative and  flowering need more energy, therefore distances will generally need to be shorter so that the light is more intense.

What spectrum is the best for my plants?

The light from the sun contains all colors.

Plants use light mostly for photosynthesis and this is done with specific chemicals in the leaves. Examples of the more important chemicals include Chlorophyll A and B, blue and red colors are the most used for photosynthesis.

But Photosynthesis is more complex and involves other chemicals like carotene and xanthophyll. 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.

 

Generally speaking, Plants do best with a light that has a lot of red and blue and smaller amounts of green and yellow.

 

Different Colors Do Different Things

Red Light (630 -660 nm) is essential for the growth of stems, as well as the expansion of leaves. This wavelength also regulates flowering, dormancy periods, and seed germination.

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

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

Far Red Light (720 – 740 nm) also passes through dense upper canopies to support the growth of leaves located lower on the plants. In addition, exposure to IR light reduces the time a plant needs to flower. 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.

Can you suggest LED lighting proposal for this configuration?

Yes, after confirm the plants you grow and the rack size you use, we can supply a lighting proposal, include spectrum, suggest distance and data like PPFD.

Sales Questions

Can you do custom spectrum ?

Custom spectrum is available for us, show us the spectrum chart or the different color ratio, the normal wavelength we can provide are as follows:

UV: 395-405nm

Blue: 450-460nm

Green: 520-530nm

Yellow: 585-595nm

Red: 620-630nm; 660-670nm

Far red: 730-740nm

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