AQUA KNIGHT V3 MARINE LIGHT (75W)
If you want stronger color, better shimmer, and more control in your reef setup, the AQUA KNIGHT V3 MARINE LIGHT is a solid upgrade. This compact marine LED aquarium light is built for nano to small reef tanks, and it offers the features reef keepers actually use daily—touch controls, dimming, and a programmable timer.
Moreover, the Aqua Knight V3 75W reef light uses a redesigned LED board and a wide lens design for more even coverage. As a result, your aquarium can look brighter, cleaner, and more balanced.
Why choose the Spectra Aqua Knight V3 Marine Light?
1) Full spectrum output for reef viewing
A good full spectrum reef LED helps your livestock look natural while also making fluorescent colors pop. Therefore, fish look sharper and corals look more vibrant.
2) 3-channel control for easy customization
The AQUA KNIGHT V3 MARINE LIGHT supports 3 adjustable color channels, so you can tune the look of your tank. For example, you can run a bluer reef look for evening viewing, then switch to a brighter daytime balance.
3) Built-in timer, dimmer, and sunrise/sunset
Consistency matters in reef tanks. That is why this programmable reef light includes a built-in timer and dimming. Additionally, sunrise and sunset transitions help avoid sudden “light shock,” which can stress fish.
4) Smart cooling for stable performance
Heat control protects LEDs and improves long-term performance. So, the light includes a built-in heat sink and a temperature-controlled quiet cooling fan for stable daily use.
Key features of AQUA KNIGHT V3 MARINE LIGHT
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Maximum power: 75W (max)
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Input voltage: 100–240V AC
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LED quantity: 15 LEDs
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Control: Touch control
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Programming: Timer + dimmer with sunrise/sunset
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Spectrum channels: 3 independent channels
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Cooling: Heat sink + temperature-controlled quiet fan
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Lens design: Wider angle for more even light spread
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Body size (compact): approx. 230 × 120 × 32 mm
Because it is compact and powerful, the AQUA KNIGHT V3 MARINE LIGHT is easy to place over smaller tanks without bulky fixtures.
Coverage and recommended tank size
This marine LED aquarium light is commonly used for nano and small reef tanks. It is often recommended for aquariums roughly in the 45–70 cm range, depending on mounting height, aquascape layout, and coral type.
Also, for larger aquariums, many hobbyists use two units in a row to improve spread and reduce shadow areas.
Best for which reef setups?
The Spectra Aqua Knight V3 Marine Light is a great match for:
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Nano reef tanks and small marine aquariums
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Soft coral and LPS-focused displays
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Mixed reefs (depending on placement and intensity)
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Fish-only marine tanks where you want better color and clarity
However, if you keep high-light corals, you may need careful placement and a stable schedule for best results.
How to set up for the best results
Step 1: Start with a safe schedule
Begin with 7–8 hours/day. Then increase slowly if corals respond well.
Step 2: Use sunrise/sunset for smoother transitions
Gradual ramping helps fish and corals adjust. Therefore, enable sunrise and sunset for a calmer daily cycle.
Step 3: Balance channels instead of blasting full power
A steady, balanced program usually works better than maximum intensity. So, tune each channel to match your livestock needs.
Step 4: Keep the lens clean
Salt creep reduces output. Therefore, wipe the outer surface regularly (with the light switched off and cooled).
Common mistakes to avoid
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Increasing intensity too quickly (can trigger algae or stress corals)
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Running very long photoperiods from day one
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Mounting too low, causing hot spots and uneven spread
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Ignoring cooling airflow (avoid blocking the fan area)
Because reef stability is the goal, small adjustments make a big difference.

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