Fluval Marine LED Light 4.0
Fluval Marine LED Light 4.0
Full-spectrum reef lighting scaled to four tank sizes. The Fluval Marine LED Light 4.0 is a Bluetooth app-controlled LED fixture for marine and reef aquariums, sold in four wattages from 20W up to 59W to suit everything from nano/desktop tanks up to 145cm aquariums. Each size runs a full-spectrum blend with actinic wavelengths for coral colour and carries an IP67 waterproof rating, suiting reef keepers who want programmable sunrise-to-night lighting cycles.
Key features
- Bluetooth app control via the FluvalSmart App, with programmable 24-hour cycles for sunrise, midday, sunset and night
- Full-spectrum LEDs with actinic wavelengths from 400nm to 480nm for coral fluorescence and colour
- 25000K colour temperature on the 32W, 46W and 59W sizes; the 20W Nano blends 15000K white diodes with pink and UV-actinic wavelengths across the same 400-480nm range
- IP67 waterproof rating on the fixture
- Onboard touch controls for on/off, blue-only and dimming, independent of the app
Specifications
| Size | Wattage | Tank coverage | Light output | SKU |
|---|---|---|---|---|
| 20W (Nano) | 20W | Nano/desktop tanks, 12.7 x 12.7cm footprint | 850 lm | BA8299 |
| 32W | 32W | 61-85cm tank length | 1,350 lm | BA8298 |
| 46W | 46W | 91-122cm tank length | 1,950 lm | BA8264 |
| 59W | 59W | 115-145cm tank length | 2,550 lm | AA2867 |
Which size do I need?
Match the size to your tank length first, then check the PAR table below if you are keeping light-hungry corals near the surface.
| Size | Best for | PAR at 30cm depth |
|---|---|---|
| 20W (Nano) | Nano and desktop tanks with a footprint around 12.7 x 12.7cm | 75 µmol |
| 32W | Tanks 61-85cm long | 90 µmol |
| 46W | Tanks 91-122cm long (a standard 4-foot tank) | 94 µmol |
| 59W | Tanks 115-145cm long | 102 µmol |
Performance and PAR at depth
Fluval publishes centre-axis PAR (photosynthetically active radiation) readings for this range at set distances below the fixture, not at fixed 15/30/45/60cm steps; the figures below are Fluval's own published readings, converted to the nearest centimetre. Fluval does not publish off-axis or edge-of-tank PAR figures for this range, so treat the table as centre-of-tank guidance only, and note the 20W Nano has no published reading past 30cm.
| Depth from light | 20W Nano | 32W | 46W | 59W |
|---|---|---|---|---|
| 8cm | 600 µmol | 376 µmol | 381 µmol | 390 µmol |
| 15cm | 212 µmol | 222 µmol | 236 µmol | 243 µmol |
| 30cm | 75 µmol | 90 µmol | 94 µmol | 102 µmol |
| 46cm | not published | 47 µmol | 55 µmol | 63 µmol |
Suitable for / not suitable for
Suitable for fish-only and reef aquariums stocked with low to moderate-light corals, such as soft corals, LPS and many zoanthids, at the PAR levels shown above, and for reef keepers who want app-based sunrise and sunset control. Not suitable as the sole light source for a high-light, SPS-dominant reef without checking the PAR at your intended coral placement depth against the table above, and not built for freshwater planted-tank spectrum needs.
Running costs and noise
The fixture is fanless, so it runs silently; Fluval does not publish an operating decibel figure for this range, so none is claimed here. Based on the wattage figures above and an assumed 8-hour reef photoperiod, indicative running cost is as follows.
| Size | Wattage | Approx. annual energy at 8 hours/day |
|---|---|---|
| 20W (Nano) | 20W | 58 kWh |
| 32W | 32W | 93 kWh |
| 46W | 46W | 134 kWh |
| 59W | 59W | 172 kWh |
Warranty and delivery
Australian Consumer Law guarantees apply to this product regardless of any manufacturer warranty term, and we could not confirm an Australia-specific manufacturer warranty length for this exact model from Fluval's own sources, so none is stated here.
Common questions
What app does the Marine LED 4.0 use?
It pairs by Bluetooth with the free FluvalSmart App for programmable sunrise, midday, sunset and night cycles.
Which size suits a standard 4-foot tank?
The 46W size covers 91-122cm tanks, which fits a standard 4-foot (120cm) aquarium.
Is this light safe to use above saltwater?
Yes, the fixture carries an IP67 waterproof rating.
Will this run high-light SPS corals?
Check the PAR at depth table above against your coral's placement depth before relying on it as the sole light source for high-light SPS.
How is the light mounted?
The 20W Nano uses a repositionable over-the-glass mount, while the 32W, 46W and 59W sizes use Fluval's adjustable mounting legs that sit above the tank without needing a cut sliding hood; Fluval does not publish an exact bracket adjustment range for this line.
Does it have manual controls as well as the app?
Yes, onboard touch controls handle on/off, blue-only and dimming, and the FluvalSmart App adds the full 24-hour programmable cycle.
