Grow Light Metrics and Specifications
Photosynthetically Active Radiation vs. Human Vision
Grow Light Efficiency Table
|Strip Light LED||~0.2|
|Ceramic Metal Halide (CHM)||1-1.5|
|High Pressure Sodium (HPS)||1-1.72|
|LED Retrofit Tubes||1-1.8|
|Florawave FS LED||2.3-2.6|
|Theoretical LED bounds||5.1|
*Reference to major brands that publish specifications. Many off-brands do not test or publish specs.
Daily Light Interval
Grow Light Lifetime
Every grow light has a finite lifetime. Some technologies will have a lot more longevity than others. Generally, lifetime is specified in the number of hours it takes for a light source to "lose" brightness below a threshold. This can be a bulb or some cases a fixture or components of a fixture.
LEDs have a widely accepted test know as the LM-80. Under this test, the lumen maintenance (output) is measured over time until it falls below a certain threshold. For example, LT-70 means the number of hours it takes the bulb to fall below 70% of its original lumen output. For many LED luminaires this translates into tens of thousands of hours.
- An Introduction to Photobiology
- Here's more information about the characteristics of specific Light Sources.
- Thermal Considerations are pertinent in making decisions for grow lights.
- Cost comparisons are made between grow light technologies.
- Light level recommendations are made by genus.
- Observations are made on Nepenthes Lighting Response
- Videos of Florawave grown plants
- Industry leading grow lights offered by Florawave Biotechnologies
- Back to The Ultimate Guide to Grow Lights
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