Dive Deeper: Info & Tips for Kessil Lighting
Choosing the Right Kessil Light for Your Tank:
- Kessil A80: A compact LED ideal for nano aquariums and soft coral setups. It offers quiet operation, energy efficiency, and simple tuning via Kessil’s control knobs or Spectral Controller.
- Kessil A360X Series: A powerful option for mid-sized to large tanks. Known for exceptional color blending, this line features deep penetration and wide adjustability with the Spectral Controller X or WiFi Dongle.
- Kessil AP9X: Designed for larger reef tanks, this fixture offers broad coverage, full WiFi control, and a refined spectrum that supports SPS coral growth. Compatible with K-Link and other smart aquarium systems.
Optimizing Kessil Lighting Performance:
- Shimmer & Spectrum: Kessil’s Dense Matrix LED creates a natural sunlight shimmer that mimics ocean lighting. Use color and intensity controls to fine-tune spectrum balance for different coral types.
- Mounting Solutions: Use Kessil’s gooseneck or mounting arms to achieve optimal height and spread. The AP9X can also be suspended for wide tank coverage.
- Smart Control Options: Connect via the Kessil WiFi Dongle or K-Link to unlock sunrise/sunset cycles, acclimation modes, and spectrum presets.
Expert Tips
Fine-Tuning Spectrum for Coral Health
Kessil’s signature Tuna Blue spectrum is engineered to enhance coral fluorescence and promote healthy photosynthesis. You can adjust between deeper blue tones and more balanced white lighting to suit the needs of different coral types. SPS-dominant tanks tend to thrive with a heavier blue spectrum, while mixed reefs may benefit from a more balanced output. The Kessil AP9X and A360X series allow for granular spectrum tuning to meet your reef’s specific demands.
Mounting Height & Spread
For optimal light distribution, mount Kessil Lights approximately 8–12 inches above the water surface. Nano lights like the Kessil A80 work well closer to the surface, while the AP9X is designed for higher mounting with wide-angle lensing to minimize shadowing. Always test PAR levels across your aquascape to ensure uniform lighting coverage — especially in tanks with rock islands or varied coral placement.
Using K-Link & Control Options
The Kessil AP9X comes with built-in WiFi, but if you're running multiple A360X or A500X fixtures, K-Link makes syncing your lights seamless. For more hands-on control, the Spectral Controller X provides a tactile interface for spectrum tuning, acclimation programming, and group control without requiring an app or WiFi setup — great for plug-and-play users.
Blending Multiple Fixtures
If your tank requires multiple lights, Kessil’s dense matrix optics allow for seamless blending between units. With AP9X or paired Kessil A360X lights, you can avoid hotspots and color banding while creating a uniform look throughout the tank. When using hybrid setups (such as T5 + Kessil), keep the Kessil units slightly forward or central to maximize shimmer and intensity on coral tops.
Installation & Maintenance
Installing Your Kessil Lights
Mounting your Kessil Lighting properly is essential for achieving even coverage and optimal coral growth. Each fixture is compatible with dedicated accessories:
- Kessil A80: Best paired with the Mini Gooseneck mount — an easy, flexible solution for nano tanks and tight spaces.
- Kessil AP9X: Designed for larger systems, the AP9X can be installed with Kessil’s tank mount kit or suspended using the AP9X hanging kit. Its slim profile and wide spread minimize the number of fixtures needed, making it ideal for clean, open aquascapes.
- Kessil A360X: Use with the Adjustable Gooseneck or Mounting Arm Kit for optimal positioning. These mounts allow height and angle adjustments for precise PAR distribution.
Before finalizing your setup, measure tank height and depth to avoid over- or under-lighting. Always test with a PAR meter if possible.
Routine Cleaning and Maintenance
To keep your Kessil Lights running efficiently:
- Wipe lenses every 2–4 weeks with a soft cloth and RO/DI water to remove salt creep and dust.
- Check vent openings and cooling fans for buildup to prevent overheating — especially in enclosed canopies.
- For the Kessil AP9X, inspect WiFi signal strength periodically and update firmware via the Kessil app for optimal performance.
- For hard-to-reach fixtures, consider mounting with quick-release hardware to simplify removal during tank maintenance.
Using a PAR Meter with Kessil Lights
Measuring PAR (Photosynthetically Active Radiation) helps ensure your reef is receiving ideal light levels for growth. Kessil’s narrow beam angle and intense central output can lead to hotspots in deeper tanks — especially with A360X or A500X units. Spread lights evenly and adjust intensity based on livestock needs:
- Soft corals and zoanthids: 75–150 PAR
- LPS corals: 100–200 PAR
- SPS corals: 200–350+ PAR
This ensures all areas of your tank, from bottom sandbeds to upper rockwork, receive appropriate illumination.
