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SKY LED Aquarium Light - Neptune Systems

Neptune Systems  |  SKU: F593205


The Closest to The Sun You Can Get

The SKY is a 200w LED aquarium light, with patented diffuser technology smoothly blending 104 LEDs to create a uniformly blended field of coral-health-optimized light. Taking a cue from nature, the specialized diffuser array mimics the filtering effect of our atmosphere blend the output of the powerful LED array, and solves the common issues of hot spots and disco-ball effects common to most LEDs, achieving the closest output to natural light that we've seen. The SKY also has a large surface area of diffused light at the origin, which emulates the horizon-to-horizon effect of the atmosphere and noticeably reduces shadowing. The SKY can achieve wider and more even coverage with fewer fixtures needed to light your reef aquarium and provide for the health, growth, and color needs of even the most demanding corals.

While there are some that prefer a natural daylight spectrum from their reef lighting, most tend to lean towards a more blue-purple to really make their coral colors pop. No matter what your preference is, the SKY has the programming options and flexibility to acheive the look you desire without sacrificing the quality of light output.


  • Wired or Wireless Connectivity
  • Can be used with or without an Apex
  • UV LED Enhanced Color Pop
  • Two Dedicated Moonlights (4 LED)
  • Diffused Light
  • Adjustable Shimmer with Optional Shimz
  • Advanced Thermal Management System
  • Near Silent Operation
  • Low Profile and Lightweight
  • Multiple Mounting Options
  • UL and CE Certified

Don't have an Apex? No Problem!

Those without an Apex can wirelessly connect to the SKY over Bluetooth and operate it via their mobile devices. If you do have an Apex controller, the SKY easily connects by its integrated AquaBus cable to an available port on your Apex base unit, energy bar, or modules. This makes set up fast and easy. If you have more than one SKY, the included Y-cable can be used to chain them together and still only take up one AquaBus connection on your Apex.

Advanced Thermal Management

The SKY has an advanced approach to thermal management that is more than just the two fans you see.

So, why two fans? With two fans the SKY can operate them at much lower RPM while keeping the LED cooler. Cooler LEDs mean a longer lifespan for your light. Also, running the fans slower means that the SKY is quieter, in fact, it's the quietest actively-cooled LED in its power-class. The SKY puts out just 33dB at one meter and set to 100%. The leading competitor clocks in at >40dB at 100% power.

Along with these fans a temperature and power monitoring algorithm manages their speed. If one fan were to fail, the other will pick up the slack and keep the SKY running and safely cooled until a replacement is obtained. Also, if for some other reason the SKY cannot adequately cool itself, such as excessively high ambient air temperature, it will throttle the power to the LED to keep them safely cool.

Multiple Mounting Options

In addition to the sleek black Sky Hanging Kit, you now have many other ways to mount the SKY over your aquarium. The Sky is compatible with a number of mounting solutions from EcoTech Marine. The RMS tank mount system is great for those wanting to mount the light on the back of the aquarium. Alternatively, you can use the RMS Arms, Track, & XR30 Slide to mount your Sky across the tank. Perfect for those with eurobraced aquariums or if you have a pesky overflow box or center brace in the way.

Compatible Tank Mounts

Neptune Systems SKY Hanging Kit
Ecotech Marine RMS XR30 G5 Tank Mount System
Orphek Universal LED Mounting Bracket

Adjustable Shimmer

As equipped, and with surface water agitation, the SKY provides a gentle shimmer that suits the tastes of most aquarists. We realized early in the SKY development that when you put a diffuser in front of LED, as many lights do, it tends to kill off nearly ALL shimmer. And that’s not good. So we designed a hybrid diffuser that has clear covers, with over four openings in the diffuser where the white LED can shine through with no diffusion. These white LED then bring back the shimmer lost by the diffuser – but in just the right amount. But because not everyone has the same taste, we created an option. If you wish to have even less shimmer, a SKY LED Diffuser Kit can be swapped in – available as an optional purchase.


  • Maximum Spread: 30" x 36"
  • Recommended Spread: 24" x 30"

LED Details

  • 104 LEDs (including uv)
  • Dedicated Moonlights
  • 4 Controllable Channels


  • Dimensions: 12.8" x 9.25"
  • Power Input: 100-240VAC 1.8A 50/60Hz
  • Variable Usage (MAX): 219W
  • Mounting Kit: Sold Separately

What's Included?

  • SKY LED Light
  • 219w Meanwell Power Supply
  • AquaBus Y-Cable
  • Orange Logo (pre-installed)
  • Gray Logo
  • 4x M5 Mounting Screws
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