EcoTech Marine

Radion XR15w G4 Pro Marine LED Light Fixture

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Out of stock

Discontinued by Bulk Reef Supply
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Why does BRS recommend Ecotech Radion Lights?

Ecotech has refined their line of Radion LED units over the years to become one of the best LED units on the market today. Now with Micro-fin cooling technology and HEI Optics increasing the color blending capabilities while also increasing the overall spread. With unmatched control through the ReefLink controller and EcoSmart Live programming, a LED unit can’t get much easier than the G4 series of Radion LED Lights.

  • More Color
  • More Cooling
  • More Coverage
  • More Control


HEI Optics

Revolutionary HEI Optics (Hemispherical Edge Illumination) are now incorporated in all G4 Radion LED lights. HEI helps deliver better uniformity, spread, and overall color mixing allowing the Radions to come very close simulating  Halide/T5 combos without any added heat or energy usage. The lens geometry of the HEI Optics offers a significant improvement over standard optics and even TIR lenses spreading the light over a greater area, allowing your tank to have a more even spread of light without any major hot spots.


Micro-Fin Cooling

The completely redefined heatsink of the G4 series of Radions now has Micro-Fin cooling creating more surface area allowing for a quicker heat transfer and dispersion allowing for more passive cooling, and less need for active cooling. Along with the heatsink's cooling fins, a computer driven, silent, IP55 cooling fan allows for active cooling over the Micro-Fins letting your light shine brighter and last longer!


EcoSmart Live

The web based interface lets you control all of your Ecotech Marine products through the cloud. Through your smartphone, tablet, or computer you can control the G4 family of Radion lights anywhere you have internet access. The ReefLink Controller creates a fully inclusive device management system, with the use of the Vortech propeller pumps, Vectra return pumps, and Radion lighting, create an authentic ecosystem that you can control right from your fingertips.



  • Maximum Spread - 24" x 24"
  • Recommended Spread - 18" x 18"

Multiple modules can be used and are recommended to cover larger tanks



  • Dimensions - 7" L x 7" W x 1.5" H
  • Cable Length - 13 Feet
  • Power Input - 100-240VAC 2.5A 50/60Hz
  • Variable Usage (MAX) - 95w


Number of LED's

4x Cool White

4x Deep Blue

4x Blue

2x Green

2x Photo Red

4x UV

2x Violet

1x Warm White


What's Included?

1x XR15 Pro G4 Radion LED Fixture

1x Power Supply

1x Power Adapter Cable

4x Hanging eyelets

1x USB micro adapter cable

1x Lens cleaning cloth

1x Owners Manual



Ecotech offers multiple types of mounting solutions for the G4 family of Radion LED lights. From full tank track systems letting you use multiple G4 Radion lights, to single light RMS mounting arms and hanging kits.

Radion Hanging Kit - Mount a single Radion light quickly and easily. Radion Hanging kits have quick lock fasteners that let you adjust the height making it a great choice for frag systems, or acclimation systems.

RMS Mounting Arm - Mount your single Radion through a robust tank mounting system. The RMS Arm is by far the quickest and least obtrusive option that doesn't require drilling any holes in your walls or ceilings.

RMS Track System - The 3 piece system lets you mount multiple Radion lights in a single track that lets you slide them back and forth to create the best coverage for your tank. The track system is perfect for larger tanks letting you use either a hanging kit to suspend the track system or the RMS Arm Kit for a tank mounting option.


Note: Reeflink Controller required for use with EcoSmart Live. Also controllable through the Neptune Apex WXM Module.


 Radion G4 Spec Sheet


Tuning Your New LED Light

Most LED lights will actually put out more light than your corals will actually need and without a PAR Meter to test the overall output, it is really hard to guess if the light is too dim or intense. We highly suggest using a PAR Meter to test the output of your lights at different points throughout your tank that you can use to tune the lights output or know where to put specific corals.


More Information
UPC 019962475030
Lighting Type LED
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Product Questions

Hi BRS team, I would like to know between Kessil A360X and Radion XR15 G4 Pro which one that you recommend.Thank you
Question by: Phu Pham on Aug 5, 2019, 12:51 PM
Hey there!

Both of them are great fixtures and we use both all over here at BRS. Myself, I like Kessil's more because of the awesome shimmer they create!

Take care!
Answer by: Thomas Billington on Aug 6, 2019, 2:05 PM
Do the lenses on the XR15 G4 pro blend the light sufficiently or would these lights benefit from the diffuser attachment for a mixed reef? I thought the diffuser was for the G3 lights.
Question by: Steve on Nov 22, 2018, 8:36 PM
The XR15 Gen4 LED lights from Ecotech do blend the color nicely, but compared to one with the diffuser there is a huge difference. Without the diffuser, you will still be able to make out single color LEDs, but compared to previous generations it is much better. Adding the diffuser makes it almost impossible to see individual colors and produces one homogeneous source of light. The Diffusers were actually designed around the G4 lights. : )
Answer by: Charlie on Nov 23, 2018, 1:57 PM
does this light have a built in controller for the settings?
Does it have a ramp mode for time scheduling?
Question by: jax on Aug 29, 2018, 5:13 PM
Hey there!

This light can easily be programmed using a computer and a USB cable, it does not have on board programming. You can also use the Reeflink to have a wireless connection to program the light cycle, including sunup/sundown.
Answer by: Thomas Billington on Aug 30, 2018, 2:07 PM
Hi, are the HEI Optics that come standard with this fixture the wide angle option?
Question by: Jeff Gutgesell on Nov 18, 2017, 7:57 AM
The Radion fixtures come standard with the wide angle lenses for maximum spread.

Happy reefing!
Answer by: Zack on Nov 25, 2017, 8:51 AM
Are the hanging kit also comparible with the xr15w?
Question by: Ryan on May 31, 2017, 4:31 AM
The Radion hanging kit will work for both the XR15 and XR30 models.

Happy reefing!
Answer by: Zack on Jun 7, 2017, 3:54 PM
I currently have XR15w G3 Pros on the RMS mounting arms. Will the new G4 fit on the same mounts?
Question by: Larry Leszczynski on May 15, 2017, 9:53 PM
Ecotech is still using the same mounting options for the G4 lights, so your old mounts will work with the new lights!

Happy reefing!
Answer by: Zack on May 17, 2017, 4:34 PM
Hi, does the Radion XR15w G4 Pro LED Light Fixture come with a goose neck or a mounting fixture?
Question by: Sunny on Mar 27, 2017, 12:44 PM
Hey there,
The mounting options for the Radion fixtures are sold separately. Currently they have the RMS tank mounts, light tracks, or hanging kit options available.

Have a great day!
Answer by: Zack on Apr 4, 2017, 10:10 AM
I have a tank 48 in L x 13 in w x 24 in H would two of these XR15 work? I have softies but mainly LPS, I do want to get into SPS
Question by: Robert on Nov 6, 2016, 2:08 PM
Hey there, great question! I would say that two of these will work just fine on your tank, especially with the lower PAR demand corals like softies and LPS. However, depending on how you place them, you may see some minor shadowing on the edges or the center. :- )
Answer by: Randy on Nov 8, 2016, 5:08 PM