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Redesigned optics provide an even light distribution that blankets your aquarium with up to 48” of coverage.

This uniform coverage minimizes hot spots and creates an effect similar to that of a metal halide / T5 combo.


In addition to Kessil’s signature Tuna Blue spectrum, the AP9X features a full range of individually adjustable color channels (red, green, purple) that can be accessed via the Kessil app.  Kessil LogicTM ensures that cosmetic color settings do not interfere with the core spectrum, allowing users to dial in a preferred color without disturbing coral health. The AP9X also includes 395nm LED chips, which emit True UVA light for maximum coral coloration.

PAR Efficient

PAR measures all visible light (400-700nm) unweightedly, but coral health primarily relies on the 425nm (violet) and 455nm (royal blue) wavelengths. Kessil LEDs focus on these essential wavelengths, prioritizing coral growth and propagation over inflated


The signature Kessil shimmer effect gives your tank a beautiful, natural, sunlit look comparable to the shimmer of a Metal Halide fixture - replicating your own piece of the ocean.

Perfect Color Mixing

Our patented Dense Matrix Array allows us to pack 55 LED chips into a space smaller than a quarter. With 110 LED chips in two arrays, the AP9X has the best color mixing in the industry - no diffuser necessary and no disco-ball effect!

Advanced Dimming

Mimic natural day/night cycles and lunar phases with smooth dimming down to 0.1%—from a gentle sunrise to the faintest moonlight.


55 LED chips in a single array create a powerful light source with wide coverage. Maximum penetration reaches up to 30" beyond the water's surface for most reefs. Penetration can be further enhanced by positioning units closer together.

Kessil Ecosystem

With two K-Link and two 0-10V control ports, the AP9X can be easily wired to adjacent Kessil fixtures.

Lights in a wired group can then be app-controlled via the AP9X’s WiFi connection. A single AP9X can act as the wireless access point for up to 32

X-Series lights and 20 0-10V lights.

K-Link + WiFi

Don’t want WiFi signals or interference?

Multiple-fixture setups can be controlled via individual WiFi connections or daisy-chained together to access up to 32 lights via one master fixture.

Turn off the WiFi and control the AP9X with the built-in manual controls or the Spectral Controller X.

Sleek yet Robust

With design elements inspired by marine fauna, high-performance automotive engineering, and the sun itself, the AP9X boasts a sleek, unobtrusive profile with an aesthetically pleasing touch panel.

Not just a box of LEDs— the AP9X compliments the natural beauty of a well-maintained aquarium.

Single Arm Mount

The new AP9X Mounting Arm lets the fixture be mounted with a single arm - the most light spread from a single arm mount fixture on the market.

The integrated swivel joint allows 60 degrees of vertical rotation and 180 degrees of horizontal rotation.

Allowing you to adjust your light to the orientation best suited for your tank.

Densest Matrix Yet

The latest iteration of Kessil’s Dense Matrix array enables us to place the chips closer than ever before. More chips in a tighter space results in better color mixing and a brighter single point source - just like the Sun on a natural coral reef.

More Light, Less Heat

More efficient LED chips and better heat management result in less energy being lost as heat. This means more light for your reef with the same power draw as before.

The AP9X sports a newly redesigned heat sink and an efficient vortex fan that reduces the accumulation of dust and debris - extending longevity and enhancing efficiency

Technical Specifications

  • Dimensions: 16.46” x 5.71” x 1.42” (41.8cm x 14.5cm x 3.6cm)
  • Unit Weight: 2.05lbs / 0.93kg
  • Spectrum: Tuna Blue + Red +Green + Purple (Violet+Indigo)
  • Coverage: Up to 48” x 24” (122cm x 61cm)
  • Power Adapter: 100-240V AC/ 50-60 Hz (Input), 48V DC (Output)
  • Power Consumption: AC 185W Max.

Optional Accessories

  • AP9X Mounting Arm
  • Extension Mount
  • Hanging Kit
  • Spectral Controller X
  • K-Link Cable

AP9X Aquarium LED Light

$869.00 Regular Price
$799.00Sale Price
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