Fluval Reef 4.0 LED Nano 25w

The Fluval Reef 4.0 LED Nano packs the reef-growing spectrum of Fluval's full-size Reef 4.0 into a compact fixture built for nano and desktop marine tanks. Its 25W, 25000K output leans on deep blues and actinics to drive coral photosynthesis and light up fluorescent pigments, while the FluvalSmart Bluetooth app programs a full 24-hour cycle and preset environment effects. It is the easy way to get serious reef lighting over a small aquarium.

Stock it with corals and dial in your water using reef supplements. Running a larger tank? Step up to the full-size Fluval Reef 4.0 strip light.

Features

• Reef-tuned full spectrum with strong blue and actinic channels at 25000K
• FluvalSmart Bluetooth app: programmable 24-hour cycle, sunrise/sunset, and preset environment effects
• 25W of output sized for nano and desktop marine and reef aquariums
• 50,000-hour LED lifespan
• Adjustable mounting arms position the light over rimless and rimmed nano tanks

Specifications

Recommended Pairings

• Corals, soft corals, LPS, and hardy SPS to grow under the reef spectrum.
• Reef supplements for the calcium, alkalinity, and trace elements corals need.
• Fluval Reef 4.0 strip light, the full-size version for tanks larger than a nano.

Frequently Asked Questions

What size tank is the Reef 4.0 Nano for?
It is designed for nano and desktop marine tanks. For a standard or larger reef, choose the full-size Fluval Reef 4.0 strip light in the correct length.

Can it grow corals?
Yes. It delivers a high-PAR, blue-heavy reef spectrum that supports soft corals, LPS, and hardy SPS in a nano; keep the most light-hungry corals higher in the tank.

How do I control it?
Through the free FluvalSmart app over Bluetooth. Set a 24-hour cycle with sunrise and sunset, tune the spectrum, and enable preset environment effects.

How does it mount?
On adjustable arms that rest on the tank rim and position the fixture over the water, so it works on both rimless and rimmed nano tanks.