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Red Sea ReefLED 90 LED Light


Starting at $33/mo with . Learn more

Item #: RS1206

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ReefLED 90 LED Light Fixture - Red Sea

Reef Safe.  Reef Spec. Easy to set up! The Red Sea`s ReefLED 90 watt LED Light Fixture, after years of research and development, was specifically designed to ensure that your coral have optimal growth and dramatic coloration, while creating a pleasant shimmer throughout the aquarium.

The ReefLED 90 use a single, compact, LED array that is focused into the aquarium through a optical-glass hollow lens that blends the LED arrangement, reducing the "disco ball" effect.  The lens is recessed within the compact body of the light fixture, to help reduce glare from the viewing sides of your aquarium.

Corals do best when placed in PAR ranges from 550 to 90 inside the aquarium. The ReefLED`s PAR readings at the water surface when mounted 8 inches above the surface are suited for this range, being approximately 500 at water surface to 150 at a depth of 19 inches beneath the surface.

The ReefLED is totally reef safe:

  1. First, it only provides the intensity and spectrum of light that are used by corals
    • 80 watts of the 90 that the ReefLED consumes is used by the light fixtures array Red Sea calls "Reef-Spec Blue". This blue is a blend of blue, violet, and ultraviolet wavelengths in a ratio that is equivalent to 23,000 Kelvin. When mixed in with the 8000 Kelvin White channel, the color temperature of the light emits a range of the natural light you will find on ocean reef structures up to 30 meters deep, a range where all coral should flourish. At its full 90 watts, the ReefLED spectrum is equivalent to 15,000 Kelvin.
  2. Second, the ReefBeat App* includes includes a preset photo-period and acclimation period, as well as warnings if your customizations go outside of the safe zone
    • The built-in WiFi allows you to control them from any smartphone or tablet device with the use of the ReefBeat Smart Aquarium App.  This app assists you in operating various Red Sea smart devices that are on your aquarium, one interface to set-up, operate, monitor, and receive notifications:
      • Peace of Mind - ReefBeat is constantly in contact with your ReefLEDs and will notify when communication is lost
      • Lunar Cycle - Your ReefLED can be programmed to mimic a lunar cycle, a 28-day moon phase for the 3 watt moonlight channel, for reef-safe nighttime viewing
      • Acclimation - An acclimation program for new corals to get used to the light by starting at a lower intensity, gradually increasing it each day, the length of the acclimation period
      • Weekly Schedule - ReefBeat stores your custom lighting schedules, using the same schedule each day, or, a different program for each day of the week
      • Staggered Sunrise and Sunset - When using multiple ReefLEDs, a time delay between your lights can create a stunning sunrise and sunset effect across your aquarium
      • Clouds - ReefBeat provides a natural "shading" effect for a specified period of the day, with 3 levels of random cloud activity

The Plug and Play set-up is done quickly in two steps.  When you install the first unit simply select from one of three presets: 15000 K, 20,000 K, or 23,000 K, then set your sunrise time, and that`s it!  Any additional ReefLEDs are automatically grouped with the first unit, operating together as a single light source.


  • REEF-SPEC light output for optimal coral growth and coloration
  • Homogenous light with a gentle shimmer
  • Reef-Safe dual-channel color setting plus dedicated moonlights
  • ReefBeat App* for easy set-up, operation, monitoring and notifications
  • Anti-glare recessed lens

Specifications and Channels:

  • Dimensions: 5.3" Length x 6.1" Depth x 2.2" Height
  • Reef-Spec Blue - 80 watts
  • 8,000K White - 10 watts
  • Moonlight - 3 watts

Mounting Options:

  • ReefLED 90 Arms are individual mounts that securely attach onto the rear wall of the aquarium and can flip upright, allowing greater access to the aquarium for reefscaping or tank maintenance.  Three sizes available for aquarium widths 18.25" to 27.5" and glass thickness 5/16" to 3/4" 
  • ReefLED 90 Pendants allow multiple ReefLED 90s to be mounted above the aquarium, giving an elegant look above your peninsula.  Two colors available, in black or white, and have 4 model lengths suitable for 30" to 72" aquariums

ReefLED Unit Recommendations:


Reefer Classic

Reefer XL

Reefer XXL


Nano 170 250 350 450 425 525 625 750 500 650
ReefLED 90
90 watt LED Light Fixture
1 2 2 3 2 3 3 4 3 4
RL90 Mounting Arm
(18.25" - 21.25")
1 2 2 3
RL90 Mounting Arm XL
(21.25" - 24.5")
2 3
RL90 Mounting Arm XXL
(24.5" - 27.5")
3 4
RL90 Hanging Kit
(30" - 39")
RL90 Hanging Kit
(39" - 48")
1 1
RL90 Hanging Kit
(49" - 60")
1 1
RL90 Hanging Kit
(61" - 72")
1 1
*The ReefBeat App is compatible with most devices operating at or above the Apple iOS 10 or Android OS 5.1. To see a complete list of all ReefBeat App supported devices, please click HERE.

Manufacturer information

With a dedicated team of scientists and other professionals, Red Sea is widely recognized as a leading innovator and manufacturer of quality products for aquarium hobbyists. Red Sea constantly strives to provide hobbyists of all levels with highly effective solution-driven products designed to make your fish-keeping experience as enjoyable and successful as possible.

The embodiment of Red Sea’s dedication to providing solutions for today’s reef-keepers is its range of MAX-NANO, MAX-E & MAX-S aquariums- The only choice for true Plug & Play™ coral reef aquariums, now featuring the very latest in LED lighting technology.

For advanced reef-keepers the Red Sea REEFER provides a great platform into which you can add your own selection of hardware. With its ultra-clear glass, ATO built-in, silent flow valve and superb quality of finish the REEFER sets the standard for those wishing to customize. REEFER is also available as a Deluxe version with LED lighting included.

Red Sea’s unique Reef Care Program (RCP) provides a comprehensive, safe and easy to use program for testing and supplementing within reef aquaria, and is perfectly complemented by Red Sea’s Coral Pro & Red Sea Salt’s, which has become the salt of choice for those seeking the very highest quality water quality for their coral reef aquariums. Both salts are made using a unique natural process which delivers unrivalled homogeneity and is perfect for delicate corals. Check your individual bucket of salt’s composition using Red Sea’s innovative new “MyBatch” software.

Whatever your aquatic needs, Red Sea delivers high quality innovative, solution based products.

4 Stars


Reviewed on
February 12, 2021

Yes, I would recommend this.

Great light for my Red Sea Aquarium

I purchased 2 of these lights for my Red Sea 425 aquarium. I absolutely love the fact that I can control the output (blue vs white) light and through the reef app. Over the last couple of months, I have watched my coral start to grow substantially and I do very much so contribute it to these lights.

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Reviewed on
August 05, 2020

Yes, I would recommend this.

great coral growth

Pros: great coral growth , esthetically appealing, reliable

Cons: Expensive but worth it

i had two reef led 90w for over a year now and love them so much i just purchased 3 more for my new reefer 625xxl. Coral growth is great , the lights them self look great esp with the reefer aquariums , the shimmer is on point the reefbeat app is easy to use and redsea updates it often so its well looked after . Very reliable running them a year now with no issues

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Reviewed on
July 10, 2020

Yes, I would recommend this.


Very good product, small, and a beautiful finish.

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Reviewed on
March 09, 2020

No, I would not recommend this.

Serious connectivity issues

Pros: Powerful lights, shimmer similar to kessils

Cons: Connectivity issues make these lights a pain to control. App is seriously lacking as well.

The lights work. Look great. Powerful for their size. But I can only maintain connectivity with the lights through my phone for about three days at a time. Reconnecting requires doing a factory reset on the lights, rebooting my modem, reconnecting the lights to my phone app, updating firmware and THEN I can make changes to the light settings. Hopefully I don't need to change them because I would have to repeat this process all over again. Major pain in the rear. I wouldn't recommend these.

Was this review helpful? 2 0


Reviewed on
December 18, 2019

Yes, I would recommend this.


Pros: Great color and shimmer. Easy to set up and program.

Cons: None so far

Just installed this today. Extremely happy with every aspect of this light. Beautiful color and shimmer. Easy to program without the need of an extra controller. We will have to see how well it grows coral

Was this review helpful? 3 0


Reviewed on
December 11, 2019

Yes, I would recommend this.

Really good but not great

Pros: Easy to use. Only lights in spectrum good for corals

Cons: Not enough white light, transformer burns really hot, connectivity issues

What’s good about this product is that for a new or somewhat casual reef keeper this only allows you to light in spectrum’s good for corals and you can sync it with other lights. What I don’t love is the connectivity seems to have issues and the white light is not quite white enough. Everything is very blue. Also, the transformer burns really hot to the point where I thought there might be a problem. I have 2 though and they both do it. It would be good if you could access Red Sea’s forums through the app as well. Overall though nice product. The available arms are great in that they turn up.

Was this review helpful? 4 0

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