Upgrade your fixture with the XHO-K15 LED ADD-ON KIT for Ecotech Radion® XR15 fixtures with RMS mount or hanging kit. Also works with new G5 fixtures and mounts. With a combined total of 16-3-Watt LED’s Blue and Violet region, the Reef Brite XHO-K15 add on kit will increase intensity, PAR, color and pop. great for improving coverage and eliminating dead spots in your tank. Each kit includes two Reef Brite 10-inch Blue Actinic XHO’s, Reef Brite XHO-B30 brackets, 2-way connector, and power supply. The included XHO’s are dimmable and can be controlled with APEX® controllers (Reef Brite APEX LED interface required sold separately). They can also be controlled using the new Reef Brite Wireless Bluetooth LE controller (Sold separately) which works with Apple® and Android™ devices. Already own a pair of Reef Brite XHO’s? The Reef Brite XHO-B30 brackets are also available separately allowing you to mount two XHO® units to your existing lighting set up.