• Marine spectrum with deep blues — a 25000K white channel across seven wavelength bands (10000–13000K, 400nm, 420nm, 440nm, 460nm, 480nm and pink), built for coral colour and growth.
• FluvalSmart Bluetooth app control — program a 24-hour cycle from your phone; a touch-switch on the fixture gives manual on/off and dimming without the app.
• IP67-rated housing — sealed against splash and humidity above an open-top tank.
• 50,000-hour LED lifespan — rated to run for years of daily photoperiods before output drops off.

All three wattages share the same spectrum, IP67 housing and Bluetooth app control. Colour temperature is rated at 25000 K. Fluval does not publish a 22 W Marine 3.0 model for this range — the smallest length sold here is 32 W.

Match the wattage to your tank's external length, not its volume. All three units cover an extendable range, so measure your tank's length before ordering rather than rounding to the nearest model.

PAR drops fast with distance — by 45.7 cm even the 59 W model reads under a fifth of its value at 7.6 cm. Keep SPS and other high-light corals in the top third of the water column rather than relying on wattage alone to reach the sand bed.

The Marine 3.0 is the predecessor to the Fluval Reef 4.0. Both run a comparable marine spectrum and IP67 housing; the 4.0 range adds Bluetooth Mesh (for linking multiple fixtures) in place of the 3.0's single-fixture Bluetooth, and is available down to a 22 W size that the 3.0 range here does not offer. Mounting hardware is not interchangeable between the two generations — check you're ordering the bracket for the model you own.

Suitable for: reef and marine fish-only-with-live-rock tanks, soft corals and LPS across all three wattages, and SPS in the upper water column where PAR is confirmed above.

Not suitable for: freshwater planted tanks — this is a marine spectrum, not the warmer white and red spectrum a planted tank needs.

Silent — there is no fan. Indicative running cost, based on a 10-hour reef photoperiod at 30c/kWh:

Covered by Fluval's manufacturer warranty against defects, in addition to your rights under Australian Consumer Law. Built for 240 V / 50 Hz Australian mains with an AU plug. Standard parcel delivery.

What's the difference between the Marine 3.0 and the Reef 4.0?

Both run a comparable marine spectrum. The Reef 4.0 adds Bluetooth Mesh for linking multiple fixtures and is available in a smaller 22 W size; the Marine 3.0 controls one fixture at a time from the app and starts at 32 W.

Can I control it without the app?

Yes — the touch-switch on the fixture gives manual on/off and dimming. Programmable sunrise/sunset cycles need the FluvalSmart app.

Will this grow SPS coral?

All three wattages deliver a measured PAR above 375 in the top 7.6 cm of water, which is in SPS range. Depth and coral placement matter as much as wattage — keep demanding corals high in the tank.

Is it splash-safe over an open-top tank?

Yes, the housing is IP67-rated against water, moisture and dust.