The new "old style lights" are complete junk! Remember the pics Mars posted of lights to beware of? THAT'S what's being passed of on you!
Lighting Need some Help! 300 Watt old Modell (60x5 Watt Chip)
- Thread starter Cringer
- Start date
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These dont' look good to me. First telltale was the concentration of wattage in such a short space--they're not putting out the right spectrum IMO, then look at the purple/blue-purple color of the light, it is nothing like the blended perfection of natural light, which is mostly "natural/clear/white" looking for lack of better description."
First, this was not designed for the home user, its a commercial unit and its half the price of some! It also ranked high in the study lined at the end.
Well in a study of growlights, it was one of the top ranked LEDs so you might want to re-think your spectrum statements. And FYI, many companies posted graphs, etc on what proper spectrum is, are using the wrong data!
A quote from SAG's LED Guide:
"LED grow light manufacturers/resellers tend to use the incorrect chlorophyll dissolved in a solvent charts or algae charts to back their claims that specific wavelengths are needed for photosynthesis. The correct chart is found here in chart C (pdf file from LiCor- the scientific standard in plant light meters and photosynthesis measurement test gear)."
Here's a chart from this study:
Economic Analysis of Greenhouse Lighting: Light Emitting Diodes vs. High Intensity Discharge Fixtures
links to sources
SAG's LED Guide:
http://www.reddit.com/r/HandsOnComplexity/comments/17nxhd/sags_plant_lighting_guide_linked_together/
PLOS ONE Study:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0099010
These dont' look good to me. First telltale was the concentration of wattage in such a short space--they're not putting out the right spectrum IMO, then look at the purple/blue-purple color of the light, it is nothing like the blended perfection of natural light, which is mostly "natural/clear/white" looking for lack of better description."
First, this was not designed for the home user, its a commercial unit and its half the price of some! It also ranked high in the study lined at the end.
Well in a study of growlights, it was one of the top ranked LEDs so you might want to re-think your spectrum statements. And FYI, many companies posted graphs, etc on what proper spectrum is, are using the wrong data!
A quote from SAG's LED Guide:
"LED grow light manufacturers/resellers tend to use the incorrect chlorophyll dissolved in a solvent charts or algae charts to back their claims that specific wavelengths are needed for photosynthesis. The correct chart is found here in chart C (pdf file from LiCor- the scientific standard in plant light meters and photosynthesis measurement test gear)."
Here's a chart from this study:
Economic Analysis of Greenhouse Lighting: Light Emitting Diodes vs. High Intensity Discharge Fixtures
links to sources
SAG's LED Guide:
http://www.reddit.com/r/HandsOnComplexity/comments/17nxhd/sags_plant_lighting_guide_linked_together/
PLOS ONE Study:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0099010
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