R2 Solutions Extreme Moonlight LED tubes are perfect for situations where you need more powerful moonlight; with limited space. These high-powered devices each contain 5 ultra-blue LEDs in a four inch fixture. Arranged in a special wide angle configuration; one light will cover up to three feet of aquarium space with shimmering blue moonlight for easy nighttime aquarium viewing. Other features include a safe; low-voltage 12V DC power supply and an eight foot cord with on/off switch. Includes all mounting brackets and double-sided tape for easy installation. Big power in a small package.