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The Fluval Reef 4.0 is a full-spectrum LED fixture for saltwater reef tanks, with a strong actinic range aimed at coral photosynthesis, growth and color. Its color channels are controlled independently through the FluvalConnect app, which also runs programmable 24-hour sunrise-to-moonlight cycles and preset tank profiles. The glass lens and IP67 water, moisture and dust protection suit it to mounting over an open tank. It competes with app-controlled reef LEDs on spectrum control and weather sealing; the trade-off is that setup and daily control live entirely on a phone, with no onboard controls.
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The Fluval Reef 4.0 LED is a full-spectrum light for saltwater aquariums. It includes an actinic range to support coral photosynthesis, growth, and color. It is engineered in Germany.
The light is operated only through the FluvalConnect mobile app over Bluetooth. The app controls independent color channels and a programmable 24-hour cycle with sunrise, mid-day, dusk, and night settings that mimic natural sun and moon cycles. It also offers several preset aquarium environments and special effects, or you can create your own.
The light has an IP67 rating for protection against water, moisture, and dust, and a glass lens. The aluminum alloy frame dissipates heat evenly to improve lighting efficiency and longevity. Extendable brackets fit a range of aquarium widths for on-tank mounting, and riser brackets allow adjustable vertical positioning. An optional suspension kit is sold separately.
