Hydra Edge 68HD 135W — Reef LED Solar Ring 180 Peak PAR Deep Tanks - AquaIllumination

The Hydra Edge 68HD is the high-output model in AquaIllumination's Hydra Edge line: 135W, EdgeField optics at 100 degrees, the Solar Ring at the center of the cluster, and the Solar Blue spectrum. This is the Edge fixture for deep tanks and demanding SPS systems — where the 44HD runs short on penetration. Full control through the free Mobius app.

PAR, With the Official Numbers

AquaIllumination publishes a PAR map measured at 24in. height at 0.5in. resolution:

• Peak PAR: 180
• PAR across a 24in. width: 90 to 135

That floor of 90 is the real difference from the 44HD. On the 44HD, PAR drops to 60 at the edges of the same 24-inch width. With the 68HD, corals sitting out toward the perimeter still get something to work with. That's what lets you keep SPS colored up somewhere other than the top of the rockwork.

AquaIllumination states that both Edge models are designed to cover roughly 30 x 30 inches when mounted 9 inches or less above the water, with higher PAR through the central 24 x 24 inch section and light reaching out to 36 inches.

Which Tank Is It For?

AquaIllumination's rule fits in one sentence: past 30 inches of depth, go with the 68HD. Tank depth and the demands of your corals decide — not tank length. For a long tank, you add fixtures rather than sizing up.

The 68HD also makes sense on a shallower SPS-dominant reef if you'd rather have headroom in intensity than run a 44HD flat out around the clock.

Solar Ring — Shimmer You Control

The Solar Ring is a dedicated array of white and warm white LEDs at the center of the cluster, wired to its own channel. AquaIllumination calls it the Caustic Engine: it's what produces the shimmer and the moving caustics across your sand bed. Because it's an independent channel in Mobius, you dial the effect without touching the rest of your spectrum — from pronounced shimmer to steady light. This effect used to require narrow optics, which cost you coverage and created shadows.

EdgeField 100° Optics

EdgeField optics are custom designed and spread light at 100 degrees. The result: even PAR, clean color mixing, and light that wraps around high points in the aquascape instead of throwing shadows behind them. The specular exit surface gives natural shimmer rather than flat illumination.

Solar Blue Spectrum

Solar Blue is the spectrum AquaIllumination developed from over a decade of coral lighting work. It keeps the signature AI blue tones reef keepers recognize while targeting the natural conditions of a reef. Simplest way to get there: every channel at the same intensity.

A dedicated moonlight channel simulates natural lunar color and intensity.

HyperDrive

HyperDrive transfers unused power from one LED channel to another. If you aren't pushing your whites to full, that power becomes available to your blues. You refine the spectrum without losing watts along the way.

Mobius and Apex Control

• Mobius: free iOS and Android app — 24-hour programming, scenes, groups, Solar Ring channel control
• myAI: also compatible
• Neptune Apex: through Fusion with the MXM module. AquaIllumination lists the Hydra Edge 68HD among MXM-compatible devices

Mounting — Sold Separately

The Hydra Edge 68HD includes no mount. AquaIllumination offers three options:

• Rear Tilt Mount: attaches the Edge to the HMS Single Arm Kit on the tank rim, with angle adjustment
• Top Tilt Mount: secures the Edge to the HMS Rail — the option for lining up multiple fixtures over a long tank
• Hanging Kit: cable suspension from the ceiling

Cade and Jay from AquaIllumination walk through every mounting option in this official video:

The Hydra Flex Arm is not recommended for the 68HD — it's longer and heavier than the 44HD. Go with HMS or the hanging kit.

The mounting system lets you tilt and aim the fixture to direct light where it's needed, minimize spill outside the tank, and cut glare.

Fan Maintenance — ReefSolution's Advice

AquaIllumination doesn't mention this in its product documentation, but it's what we see come through the shop: a dusty fan makes the fixture run hot, and heat is one of the big causes of failure. It matters even more on the 68HD than on the 44HD: 135W to dissipate instead of 95 means more heat moving through the same style of fan and heat sink.

Blow it out with compressed air now and then, or wipe it when dust builds up. Two minutes of maintenance that extends the life of a $1,000 fixture. No vinegar or products here: this is dry dust, not calcium.

Technical Specifications

• Power consumption: 135W from the wall
• PAR: 180 peak, 90 to 135 across 24in. (measured at 24in. height)
• Spread: 100° (EdgeField optics)
• Length: 15.25in. (38.74cm)
• Width: 6in. (15.24cm)
• Height: 1.0625in. (2.7cm)
• Weight: 3.7lbs. (1.7kg)
• Universal input range: 100 to 240VAC / 50-60Hz
• Cable length: 14ft. 8in. (4.47m)
• PSU regulatory compliance: UL, CE & RoHS
• Color: black
• Build: engineered and assembled in the USA

What's in the Box

• 1 x AI Hydra Edge 68HD
• 1 x Power Adapter
• 1 x Quick Start Guide

Not included: the mounting hardware. See the mounting section above.

68HD or 44HD?

The difference is intensity, not footprint. Both target the same roughly 30 x 30 inch area. AquaIllumination's official numbers, measured at 24 inches of height:

• Hydra Edge 44HD: 95W — 125 peak PAR, 60 to 125 across 24in. — 11.25in. long — 2.7lbs.
• Hydra Edge 68HD: 135W — 180 peak PAR, 90 to 135 across 24in. — 15.25in. long — 3.7lbs.

Look at the floor, not just the peak: 90 versus 60 across the same width. That's what decides whether your perimeter corals thrive or just hang on.

Operation

AquaIllumination describes the Hydra Edge as running "whisper-quiet," thanks to its fan and custom heat sink design. Actual noise depends on your setup and mounting height. The ultra-slim housing stays discreet above the tank.

Why Choose ReefSolution

Authorized AquaIllumination dealer in Canada with technical support in French. Since mounting is sold separately, send us your tank dimensions before ordering and we'll tell you exactly which parts you need. It's the most common mistake on this line. Shipping across Canada.

Complementary products:

• AquaIllumination Hydra Edge Mounting Kit — the 44HD/68HD bracket plus HMS Single Arm: what you need to mount the Edge on the tank rim
• AquaIllumination Hydra Edge Hanging Kit — cable suspension, the other way to mount the 68HD
• Hydra Edge 44HD — the model below: 95W and 125 peak PAR, for tanks 30 inches deep or less
• AquaIllumination HMS Tank Mount — the HMS system, the foundation of every rim mount in the AquaIllumination line

Frequently Asked Questions

Why choose the Hydra Edge 68HD over the 44HD?

For intensity, not coverage — both light the same area. AquaIllumination's official numbers at 24 inches of height: the 68HD delivers 180 peak PAR and 90 to 135 across a 24-inch width, against 125 peak and 60 to 125 for the 44HD. AquaIllumination recommends the 68HD for tanks deeper than 30 inches.

Does the Hydra Edge 68HD come with a mount?

No. The box holds the fixture, the power adapter, and the quick start guide. For tank-rim mounting you need the Hydra Edge bracket and the HMS Single Arm Kit — two separate pieces. For ceiling suspension, the Hydra Edge Hanging Kit. Write to us before ordering if you're unsure.

How do you maintain a Hydra Edge 68HD?

Keep the fan clean. The Hydra Edge cools through a fan and heat sink, and the 68HD has 135W to dissipate. A dusty fan makes the fixture run hot, and heat is a big cause of failure. A shot of compressed air now and then, or a wipe when dust builds up. AquaIllumination doesn't specify a fan maintenance interval — it depends on your room environment.

Is the Hydra Edge 68HD compatible with the Flex Arm?

No. The Hydra Flex Arm is not recommended for the 68HD: it's longer and heavier than the 44HD. Use the HMS Single Arm Kit with the Hydra Edge bracket, the HMS Rail, or the Hanging Kit.

Does the Hydra Edge 68HD work with Neptune Apex?

Yes. It runs through Mobius (iOS and Android), and AquaIllumination lists it among devices compatible with Neptune Apex Fusion via the MXM module. The myAI app works as well.