One of the most sophisticated and user friendly marine led lights available on the market the aquasun 36x3w led aquarium lighting unit is both high quality and completely adjustable to the requirements of your tankr the aquasun led unit supports the option for separate blue and white led control via a built in timer the controller feature also provides the option to set lighting on a 24 hour cycle with 0 100 intensity sustaining daylight and night time cycles set to your own specifications