The XHO Actinic Blue if you want the most color and pop from your corals. The XHO's are made here in the US and used by Jason Fox, Cherry Corals, Budman Corals, Gonzo Corals and many of the other top coral vendors out there. There are legs available that allow you to set them directly on the tank or use the included L brackets to mount them to your fixture. The XHO's are dimmable allowing you to use an APEX to control using our APEX LED interface unit (Sold separately no VDM module required if you have an available VR port) or our Bluetooth LE controller. The Lumi Lite Pro Actinic Blue and Lumi Lite Actinic Blue are also great options for adding color and pop. The Lumi Lite Pro uses the same L brackets as the XHO and both come with legs allowing you to mount them directly on a tank. They are also dimmable allowing you to use them with our APEX LED interface or Bluetooth LE controller.