- Sku: 16885
Fluval Plant 4.0 Aquarium LED Lights
The Fluval Plant 4.0 LED is a full-spectrum, app-controlled fixture built to grow demanding aquarium plants while making your aquascape pop. Its 7500K color temperature and customizable RGB and white spectrum drive strong photosynthesis and vivid plant and fish colors, and the FluvalSmart Bluetooth app programs a natural 24-hour cycle with gradual sunrise and sunset. It comes in four sizes to fit tanks from 15 to 61 inches.
Pair it with a Fluval CO2 system and browse our live aquarium plants to build a thriving planted tank, or see all our freshwater supplies.
Features
- Customizable full spectrum (RGB + white) at 7500K, tuned for plant growth and color
- FluvalSmart Bluetooth app: programmable 24-hour cycle, sunrise/sunset, and custom color presets
- High CRI for true-to-life plant and fish tones
- IP67-rated water resistance
- 50,000-hour LED lifespan, backed by a 4-year warranty
- Adjustable mounting brackets extend to fit a range of tank widths
Choose Your Size
| Fixture size | Fits tank length | Power |
|---|---|---|
| 15-24 in | 15 to 24 in (38-61 cm) | 22 W |
| 23-35 in | 23 to 35 in (58-89 cm) | 32 W |
| 35-49 in | 35 to 49 in (89-124 cm) | 46 W |
| 46.25-61 in | 46 to 61 in (117-155 cm) | 59 W |
The adjustable end brackets span the listed tank length, and the larger sizes deliver more total output to light longer, deeper tanks.
Specifications
| Brand | Fluval |
| Model | Plant 4.0 LED |
| Type | Full-spectrum planted-aquarium LED |
| Color temperature | 7500K |
| Spectrum | Customizable RGB + white |
| Control | FluvalSmart Bluetooth app, programmable 24-hour cycle |
| Water resistance | IP67 |
| LED lifespan | 50,000 hours |
| Warranty | 4 years |
| Sizes | 22W / 32W / 46W / 59W |
| For | Freshwater & planted aquariums |
| Availability | In-store pickup only |
Recommended Pairings
- Fluval CO2 system supplements CO2 for faster, denser plant growth under high light.
- Live aquarium plants to stock the tank this light is built to grow.
- Freshwater supplies, substrate, ferts, and livestock for your planted tank.
Frequently Asked Questions
Is the Plant 4.0 strong enough for high-light carpeting plants?
Yes, in the right size for your tank. It delivers a high-output full spectrum tuned for plant growth; pair it with CO2 and good fertilization for demanding carpets like dwarf hairgrass or Monte Carlo.
How do I control it?
Through the free FluvalSmart app over Bluetooth. Set a programmable 24-hour cycle with gradual sunrise and sunset, adjust the color spectrum, and save custom presets.
Which size do I need?
Match the fixture to your tank length using the size chart above. The adjustable brackets add some flexibility, but the size whose range brackets your tank length gives the best coverage.
Is it safe around water?
The fixture is IP67-rated against splashes and humidity. As with any electrical aquarium gear, mount it securely and run a drip loop on the cord.
Have a question?

Fluval Plant 4.0 Aquarium LED Lights


