12х LED assembly for reef tank v2.2
Version 2.2 Product code: 12xV2.2

The 12xV2.2 LED assembly is a "lite" edition source for your reef tank. Its creation was the outcome of years of research, as outlined in article
Light in the Reef Aquaria


Availability:  Out of Stock

Color Max. current Max. voltage drop on the chain Wavelength /
Color temperature
LED emitter type
Power connector X1  
Turquois 1000ma 3.5V 505-510nm Luxeon Rebel ES LXML-PE01 bin: L4R
Royal Blue 1000ma 6.2V 445-450nm
Luxeon Rebel ES LXML-PR02 bin: A4R
Luxeon Rebel ES LXML-PR02 bin: A5R
Red 700ma 3.0V 620-630nm Luxeon Rebel LXML-PD01 bin: H4Z
Power connector X2
White 1000ma 6.2V 5650K
Luxeon Rebel ES LXML-PWC2 bin: WW0R
Luxeon Rebel ES LXW8-PW40 bin: SW0R
Blue 1000ma 3.5V 470-475nm Luxeon Rebel ES LXML-PB02 bin: J3R
Violet 1000ma 18.0V 400-410nm
Semileds N35L-U-A 340mW @ 350mA 2pcs
Semileds N35L-U-A 400mW @ 350mA 2pcs
Semileds N35L-U-A 480mW @ 350mA 1pcs


Total power consumption, W: ​ up to 39
Board dimensions:  
             Length, mm / in   60 / 2.36
            Width, mm / in 60 / 2.36
            Height, mm / in 3.7 / 0.15
Mounting holes diameter, mm / in 3.3 / 0.13
Mounting holes spacing, mm / in 47.5 / 1.88
Weight, grams / oz 30 / 1.06
Completely solderless assembly. Matching connectors are included. YES

The LEDs are placed on a patented SinkPADTM MCPCB which provides an improved heat conducting path.

The LED assembly must be used with matching LED drivers. If using with ReedLedLab controller and drivers, control channels on the drivers can be configured by jumpers. Instructions.


  • Full-spectrum
  • Small dimensions (size is determined by secondary optics)
  • 12 power LEDs with best efficiency commercially available at the time of manufacture*
  • 10 LED types combined in 6 independent channels, to provide unique control over spectrum*
  • Sufficient radiation in true violet range, to provide for best coloration, fluorescence, and coral growth*
  • Advanced SinkPADTM metal board with improved heat path (up to 135 W/m.K), can be used with passive cooling heatsinks to achieve a most reliable fanless solution
  • Minimized “Disco effect”, due to densely populated LEDs and the use of hybrid secondary optics with diffusers
  • A completely solderless solution simplifies the assembly
  • 100% quality control for all LEDs on the assembly


 “*” No competing solutions were available on the market by January, 2014 

Use our Spectrum Simulator to evaluate the spectral output of the LED assembly in different modes:

The spectral graphs are based on mathematical simulation and are provided for reference only.

Make a DIY LED fixture using our LED assembly: Video Tutorial:

Note: – the tutorial was made using rev. 2.2 of the 6-channel LED assembly and a different connector. You can also watch our video tutorial on how to use the new connectors.

Using the KRP crimper tool:

Theoretical and practical aspects of LED lighting

What type of light is available to corals in nature? What type of light do corals require for growth and for best coloration? Under what spectrum will your reef tank look its best? You will find the answers to these questions in this section.

All you need for DIY

Do you want to build a DIY LED fixture that would best fit your tank’s requirements, using the state of the art technological achievements and the highest grade components? You will find the answers to these questions in this section.


Building a DIY LED fixture has never been so easy! Find the answers to many questions that hundreds of others have asked. Everything you want to know about building DIY LED fixtures is available in this section.