Description
Fluval Plant 4.0 LED– Full Spectrum Planted Aquarium Lighting
The Fluval Plant 4.0 LED is a high-performance, fully programmable freshwater planted aquarium light designed to provide the spectrum, intensity and control required for healthy aquatic plant growth. Engineered specifically for planted aquariums and aquascaping, the Plant 4.0 combines powerful full-spectrum LED lighting with FluvalConnect smartphone control, independently adjustable colour channels and a programmable 24-hour lighting cycle.
Available in four sizes from 22W to 59W, the Fluval Plant 4.0 range can accommodate aquariums from approximately 38cm to 148cm wide, making it suitable for everything from smaller planted aquariums through to large aquascaped displays.
Whether you’re creating your first planted aquarium or developing a more advanced aquascape with demanding plant species, the Fluval Plant 4.0 LED provides excellent light intensity combined with extensive control over the appearance and daily lighting schedule of your aquarium.
Full Spectrum LED Lighting for Aquarium Plants
Lighting is one of the most important factors in maintaining a successful planted aquarium. Aquatic plants require suitable light intensity and spectrum to support photosynthesis, healthy growth and natural colour development.
The Fluval Plant 4.0 LED uses a specially developed full spectrum incorporating six unique LED colour bands. These combine different colour temperatures and wavelengths to create lighting optimised for aquatic plant growth, colour and health.
The spectrum includes 3000K, 6500K and 15000K white LEDs together with pink, 460nm and 480nm LEDs. Rather than relying on a single type of white LED, this combination allows the Plant 4.0 to deliver a broad spectrum while also giving the aquarist control over how the aquarium looks.
Excellent 90 CRI Colour Rendering
The Fluval Plant 4.0 offers an excellent 90 CRI – Colour Rendering Index. A high CRI means colours appear more natural and true to life under the aquarium lighting.
This is particularly beneficial in a planted aquarium where vibrant green plants, red-leaved species, natural wood, rocks and colourful tropical fish form part of the overall display.
Rather than simply producing a bright aquarium, the Plant 4.0 is designed to showcase your aquascape with vivid but natural-looking colour.
Complete FluvalConnect Smartphone Control
The Fluval Plant 4.0 LED is operated through the FluvalConnect mobile app, providing extensive control over the aquarium lighting directly from your compatible smartphone or mobile device.
Individual colour channels can be independently adjusted, allowing you to fine-tune both the spectrum and intensity according to the requirements of your plants and the appearance you want to achieve.
No additional lighting controller is required, helping to keep installation simple and reducing the amount of additional equipment around your aquarium.
Programmable 24-Hour Aquarium Lighting
Rather than simply switching from darkness to full intensity, the Fluval Plant 4.0 allows you to create a complete 24-hour lighting programme.
Through FluvalConnect, you can independently configure sunrise, mid-day, dusk and night periods, creating gradual transitions throughout the day that more closely replicate natural changes in light.
Several convenient preset planted aquarium environments are also available, providing an easy starting point before creating your own customised programme.
Having precise control over lighting duration and intensity can also be particularly useful when balancing plant growth against unwanted algae. More light is not always better in a planted aquarium, so the ability to gradually adjust the lighting programme as the aquarium develops is a major advantage.
Strong PAR Performance for Planted Aquariums
PAR – Photosynthetically Active Radiation – is an important measurement when assessing aquarium lighting for live plants. The Fluval Plant 4.0 range provides strong PAR performance, helping deliver usable light down through the aquarium water column.
This makes the Plant 4.0 suitable for a wide variety of planted aquarium layouts, from easier low-maintenance species through to more demanding aquascapes when the correct lighting intensity, nutrients and CO2 are provided.
Lighting intensity should always be matched to the aquarium depth and the requirements of the plants being grown. FluvalConnect makes this particularly straightforward because the intensity can be adjusted without replacing or physically modifying the light.
Wide and Even Aquarium Coverage
Each LED in the Fluval Plant 4.0 provides a wide 110° beam angle, helping distribute light evenly throughout the aquarium.
Good light distribution is particularly important in planted aquariums because plants may be positioned across the entire width and depth of the aquascape. Wide coverage helps minimise excessively bright central areas and darker sections around the edges of the aquarium.
Flexible Aquarium Mounting
The Fluval Plant 4.0 LED includes extendable mounting brackets, allowing each model to fit a range of aquarium widths rather than being restricted to one exact tank size.
New adjustable riser brackets are also included, allowing the vertical position of the light to be adjusted above the aquarium.
For aquascapers who prefer a suspended lighting installation, an optional Fluval suspension kit is also available separately.
Built for the Aquarium Environment
Aquarium lighting operates in a demanding environment where moisture and splashes are unavoidable. The Fluval Plant 4.0 therefore features an advanced IP67 water, moisture and dust protection rating.
A high-quality glass lens provides excellent light transmission and durability, while the aluminium alloy frame efficiently dissipates heat across the lighting unit.
Effective heat management helps maintain LED efficiency and longevity, with the Plant 4.0 LEDs rated for approximately 50,000 hours of operation.
Fluval Plant 4.0 LED Sizes
- Fluval Plant 4.0 LED 22W: Fits aquariums 38–63cm wide – 1600 lumens – 99 LEDs
- Fluval Plant 4.0 LED 32W: Fits aquariums 59–89cm wide – 2550 lumens – 168 LEDs
- Fluval Plant 4.0 LED 46W: Fits aquariums 88–126cm wide – 3650 lumens – 252 LEDs
- Fluval Plant 4.0 LED 59W: Fits aquariums 110–148cm wide – 4700 lumens – 336 LEDs
Fluval Plant 4.0 Key Features
- Powerful full-spectrum planted aquarium LED lighting
- Designed to optimise aquatic plant growth, colour and health
- Six unique LED colour bands
- Excellent 90 CRI colour rendering
- 7500K overall colour temperature
- Strong PAR performance at aquarium depth
- FluvalConnect mobile app control
- Independently adjustable colour channels
- Programmable 24-hour aquarium lighting cycle
- Custom sunrise, mid-day, dusk and night settings
- Preset planted aquarium environments
- Wide 110° LED light distribution
- Extendable aquarium mounting brackets
- Height-adjustable riser brackets included
- IP67 water, moisture and dust protection
- High-quality glass lens
- Heat-dissipating aluminium alloy frame
- Approximately 50,000-hour LED lifespan
- Optional suspension kit available separately
- Engineered in Germany
Which Fluval Plant 4.0 Do I Need?
Choosing the correct Fluval Plant 4.0 primarily depends on the width of your aquarium. The adjustable mounting brackets provide flexibility, with four models covering aquariums from approximately 38cm through to 148cm wide.
- 38–63cm aquarium: Choose the Plant 4.0 22W
- 59–89cm aquarium: Choose the Plant 4.0 32W
- 88–126cm aquarium: Choose the Plant 4.0 46W
- 110–148cm aquarium: Choose the Plant 4.0 59W
Ideal for Planted Aquariums and Aquascaping
The Fluval Plant 4.0 LED range is an excellent choice for anyone wanting to take their planted aquarium lighting to the next level. Its combination of strong PAR output, full-spectrum illumination and extensive app-based control makes it equally suitable for attractive community aquariums containing live plants and dedicated aquascaping setups.
The ability to adjust individual colour channels and overall intensity is particularly valuable as a planted aquarium develops. New aquariums can initially be operated at reduced intensity before lighting is gradually increased to suit plant growth, nutrient availability and CO2 levels.
For more advanced planted aquariums using pressurised CO2 and regular fertilisation, the Plant 4.0 provides the control needed to balance these different elements and create a customised lighting schedule.
With four sizes available, FluvalConnect control, 90 CRI, six-colour full-spectrum output, IP67 protection and powerful PAR performance, the Fluval Plant 4.0 is a premium freshwater LED lighting solution for aquarists who want healthy plant growth combined with outstanding aquarium presentation.
Please note: Aquarium plant requirements vary considerably between species. Lighting intensity and duration should be adjusted according to aquarium depth, plant species, nutrient availability and CO2 supplementation. Increasing light intensity without sufficient nutrients or CO2 may encourage unwanted algae growth.









