The Reef Brite XHO K15 LED Add-On Kit is designed to upgrade Ecotech Radion XR15 fixtures, including new G5 models, when used with an RMS mount or hanging kit. This kit significantly boosts the intensity, PAR, and overall color vibrancy in your reef aquarium, enhancing the 'pop' of corals. It also works to improve light coverage and effectively eliminate unwanted dead spots within your tank. This comprehensive kit features a combined total of 16 3-watt LEDs, focusing on the crucial Blue and Violet regions of the spectrum. Each package includes two 10-inch Blue Actinic XHOs, Reef Brite XHO-B30 brackets, a 2-way connector, and a dedicated power supply. The included XHO units are fully dimmable and can be controlled using APEX controllers with a separate Reef Brite APEX LED interface, or via the new Reef Brite Wireless Bluetooth LE controller, which is compatible with Apple and Android devices. For those who already own Reef Brite XHOs, the XHO-B30 brackets are also available separately. This add-on kit is perfect for reef keepers seeking to maximize the performance of their existing Ecotech XR15 lighting system. It's ideal for enhancing coral growth, coloration, and overall tank aesthetics by providing a powerful boost in essential blue and violet light spectrums, ensuring a more uniform and intense light field across the entire aquarium.