Guide to Customizing Light Spectrum for Horticulture

by Horticulture Lighting Group 3 Comments

Full Spectrum White LED offer a great spectrum for growing plants. There is no perfect spectrum. Standard 3000K spectrum works great for flowering and you do have to change the spectrum.

Changing spectrum can have photomorphogenesis effects and response may differ between different plants and during life cycle of plants. We will add add some QB11 660nm Deep Red and 450nm Blue to white LED Quantum Board QB 288 and see how spectrum changes.

 

Mixing QB 288 3000K and QB 11 Deep Red

3000K QB
QB 288 3000K

 

Deep Red mono
QB 11 Deep Red


Deep red
94.5 Watts QB 288 3000K + 5.5 Watts QB 11 Deep Red


deep Red
 90 Watts QB 288 3000K + 10 Watts QB 11 Deep Red


Spectrum 660nm
88.5 Watts QB 288 3000K + 11.5 Watts QB 11 Deep Red


Quantum Board Deep Red
83 Watts QB 288 3000K + 17 Watts QB 11 Deep Red

 

Mixing QB 288 4000K and QB 11 Deep Red

 4000K LED spectrum
QB 288 4000K

 

Deep Red mono
QB 11 Deep Red

 

Mixed Spectrum
94.5 Watts QB 288 4000K + 5.5 Watts QB 11 Deep Red

 

LED Spectrum
88.5 Watts QB 288 4000K + 11.5 Watts QB 11 Deep Red

 

Mixing QB 288 3000K and QB 11 Blue

3000K QB
QB 288 3000K


Blue LED
QB 11 Blue

 

Addding Blue to QB 288
93 Watts QB 288 3000K + 7 Watts QB 11 Blue


Blue with White LED
 86.5 Watts QB 288 3000K + 13.5 Watts QB 11 QB 11 Blue




Horticulture Lighting Group
Horticulture Lighting Group

Author



3 Responses

peter lane
peter lane

March 09, 2019

To John
We are currently working on a design that works directly off a constant voltage DC bus, however, the LED unit itself will still need an on board constant current protection circuit.

Cris Van
Cris Van

February 20, 2019

in ? section, at bottom of “guide to customizing light spectrum”, a person asked a question concerning drivers that could be used.with these boards (he is John). This question is of interest to our company.

However, there appear to be an answer posted by hlg ….. John wrote in Oct 2018 – 5 months ago.
indication

John
John

October 15, 2018

Can these be used with a DC voltage regulator as the driver?

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