The Eheim powerLED+ Marine Hybrid Extension Set is a high-quality lighting component designed to enhance saltwater reef aquariums. This extension provides a balanced spectrum of white and royal blue light, specifically formulated to support the photosynthesis of coral zooxanthellae and promote vibrant coral coloration within your marine environment. It serves as a direct replacement for existing T8 or T5 fluorescent tubes of a similar length. This extension set features an optimal 1:1 combination of white and royal blue light, with royal blue LEDs emitting at 445-450 nm and a wide 120-degree beam angle. Engineered for high light output, its coordinated spectrum is crucial for encouraging coral growth and enhancing natural fluorescence. Boasting an average life of over 50,000 hours, equivalent to 13-14 years at 10 hours per day, this German-made unit offers exceptional longevity. Please note, this product is an extension set and does NOT include a power supply. Ideal for reef aquarists seeking to expand or upgrade their Eheim powerLED+ system, this extension set is best suited for those dedicated to cultivating healthy, colorful corals. Its precise spectral output and long lifespan make it a reliable choice for maintaining a thriving reef tank, ensuring your corals receive the exact light needed for robust growth and stunning visual appeal.