Kessil

Kessil A360X Tuna Blue

4.8

Shimmer and color that make corals come alive.

  • Dense Matrix LED array delivers powerful, uniform PAR
  • Signature shimmer that mimics natural sunlight
  • Tunable color from deep blue to full spectrum
  • Supports both LPS and SPS coral growth
  • Compact puck design with wide coverage
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 AquaticRig score: 4.8/5

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Pros

  • Outstanding coral coloration and growth
  • Beautiful, lively shimmer effect
  • Wide, even coverage from one fixture
  • Simple, intuitive color and intensity dials
  • Robust build with excellent thermal design

Cons

  • Premium price point
  • Controller and mount sold separately
  • Two knobs offer less granular control than apps
  • May need a gooseneck or rail for best placement

At a glance

Shimmer and color that make corals come alive.

The A360X is a benchmark reef light, blending strong growth potential with the shimmer and color reefers prize.

  • Dense Matrix LED array delivers powerful, uniform PAR
  • Signature shimmer that mimics natural sunlight
  • Tunable color from deep blue to full spectrum
  • Supports both LPS and SPS coral growth
  • Compact puck design with wide coverage

Product Specifications

Type
Dense Matrix LED reef light
Use
LPS and SPS reef tanks
Spectrum
Tunable, Tuna Blue
Coverage
Wide single-point spread
Effect
Natural shimmer
Water Type
Saltwater

Why we recommend the Kessil A360X Tuna Blue

Kessil built its reputation on two things: shimmer and color, and the A360X delivers both at a high level. Its Dense Matrix LED packs many small diodes into one point source, which produces the rippling shimmer that makes a reef look like sunlight is dancing across the rock. That same design gives you strong, uniform PAR capable of supporting demanding SPS as readily as gentler LPS.

Control is refreshingly simple. Two dials adjust color, from rich actinic blue to a fuller spectrum, and intensity, letting you tune the look and the growth without wading through menus. For keepers who want finer scheduling, Kessil’s optional controller and link accessories add ramping and sync. The build quality and thermal management are excellent, the kind of fixture you mount once and trust for the long haul.

Who it’s for

This light is for reef keepers who want top-tier coloration and growth from a clean, compact fixture. It shines on small to medium reef tanks where one puck covers the footprint, and several can be railed together over larger systems. Budget for a mount and, if you want scheduling, a controller, since those are separate. For a coral-focused tank where appearance matters as much as growth, the A360X is a worthy investment.

The Bottom Line

The A360X is a benchmark reef light, blending strong growth potential with the shimmer and color reefers prize. For a serious coral tank, it is about as good as a single compact fixture gets.

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Frequently Asked Questions

Can it grow SPS corals?

Yes, it produces enough PAR to support SPS when mounted at an appropriate height. Acclimate corals gradually and verify par at depth for the most demanding species.

How much area does one light cover?

A single A360X covers a roughly two-foot footprint depending on mounting height and coral demands. Larger or longer tanks benefit from multiple units on a rail.

Does it need a controller?

No, the two onboard dials handle color and intensity. The optional controller only adds scheduling, ramping, and syncing across multiple fixtures.

Is the shimmer just for looks?

The shimmer is a byproduct of the point-source design and is largely aesthetic, but it is a beloved Kessil signature. The same design also delivers excellent, even penetration.

What mount do I need?

Kessil offers goosenecks and rail mounts sold separately, and third-party options exist too. Choose one that lets you set the right height above the water for your corals.