Fluval Reef 4.0 LED Aquarium Lighting (3)
Fluval Reef 4.0 LED Aquarium Lighting - Image 2

Fluval Reef 4.0 LED Aquarium Lighting

Price range: £152.99 through £254.99

  • Specialist reef lighting – full-spectrum LEDs designed to support healthy coral growth and colouration.
  • Seven LED colour bands – including blue and violet wavelengths essential for coral photosynthesis.
  • FluvalConnect app control – customise your lighting directly from your smartphone.
  • Adjustable colour channels – fine-tune the spectrum and brightness to suit your aquarium.
  • 24-hour programmable lighting – create natural sunrise, daylight and sunset transitions.
  • High PAR output – provides effective light penetration for reef aquariums.
  • IP67-rated protection – resistant to moisture, splashes and dust.
  • Flexible mounting – extendable brackets and height-adjustable risers included.
  • Long-lasting LEDs – rated for up to 50,000 hours of operation.
  • Four sizes available – suitable for a wide range of marine aquariums.
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Description

Fluval Reef 4.0 LED Aquarium Lighting

The Fluval Reef 4.0 LED Aquarium Light delivers powerful, full-spectrum illumination designed specifically for marine and reef aquariums. Featuring seven carefully selected LED colour bands, including essential actinic wavelengths, it provides the light needed to support photosynthetic corals while enhancing their natural colours.

Available in four sizes, the Fluval Reef 4.0 combines advanced lighting performance with convenient smartphone control, programmable lighting schedules and a durable, water-resistant design.

Fluval Reef 4.0 LED – Key Features

  • Seven LED colour bands – a specialist marine spectrum designed for coral growth, health and colouration.
  • FluvalConnect app control – customise lighting directly from your smartphone.
  • Independent colour channels – fine-tune the spectrum and brightness to suit your reef.
  • Programmable 24-hour cycle – create gradual sunrise, daylight, sunset and nighttime transitions.
  • Preset lighting environments – convenient starting points for different aquarium displays.
  • High PAR output – delivers useful light intensity at a range of aquarium depths.
  • IP67-rated protection – resistant to moisture, splashes and dust.
  • Protective glass lens – maintains clear light transmission over time.
  • Flexible mounting options – extendable brackets and height-adjustable risers included.
  • Long-lasting LEDs – rated for up to 50,000 hours of operation.

Full-Spectrum Lighting for Coral Growth

Photosynthetic corals rely on light to support the symbiotic algae living within their tissues. Providing the correct spectrum and intensity is therefore essential for a healthy reef aquarium.

The Fluval Reef 4.0 combines white, blue, violet and pink LEDs to deliver seven distinct colour bands, including important wavelengths between 400nm and 480nm.

This specialised spectrum helps support coral photosynthesis while bringing out the vibrant fluorescence and natural colouration of marine livestock.

The independently adjustable channels allow you to tailor the lighting to your aquarium, although the needs of individual corals and their placement should always be considered.

Fluval Reef 4.0 LED with FluvalConnect App Control

The Fluval Reef 4.0 is operated through the FluvalConnect mobile app, giving you convenient control over your aquarium’s lighting.

Adjust individual colour channels, select preset lighting environments or create a personalised 24-hour programme.

Gradual sunrise and sunset transitions help provide a consistent daily routine without sudden changes in brightness.

Once programmed, your chosen lighting schedule operates automatically, making everyday reef maintenance more convenient.

Durable Construction and Flexible Installation

The Fluval Reef 4.0 features a slim aluminium alloy housing designed to dissipate heat efficiently while maintaining a modern appearance.

Its IP67-rated protection and durable glass lens help protect the LEDs against moisture and splashes around marine aquariums.

Extendable mounting brackets and height-adjustable risers provide flexible installation, while an optional suspension kit is available separately.

Which Fluval Reef 4.0 LED Do I Need?

The Fluval Reef 4.0 is available in four sizes:

  • 22W: Aquariums 38–63cm wide
  • 32W: Aquariums 59–89cm wide
  • 46W: Aquariums 88–126cm wide
  • 59W: Aquariums 110–148cm wide

When choosing reef lighting, consider aquarium depth, coral species and the intensity of light required, rather than aquarium width alone.

Why Choose the Fluval Reef 4.0?

Combining a coral-focused spectrum, customisable smartphone control and durable construction, the Fluval Reef 4.0 offers a versatile lighting solution for modern marine aquariums.

Whether you’re creating a colourful soft coral display or developing a mixed reef, it provides flexible lighting that can be tailored to the needs of your aquarium.

If you have any questions about this Fluval Reef 4.0 LED Aquarium Lighting and whether it’s the right product for your marine aquarium, please contact us and a member of our friendly store team will be more than happy to answer all of your questions.

You can learn more about Fluval Aquarium Lighting and the Fluval Smart App in this handy article about lighting controls

Additional information

Size

22w – 15 – 24" (38 – 61cm), 32w – 24 – 34" (61 – 85 cm), 46w – 36 – 48" (91 – 122 cm), 59w – 45 – 57" (115 – 145 cm)
Brands

Fluval

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