Waterproof and Effective Suggested Spread: 8" x 14" The full spectrum LED system from Tunze is incredibly simple to install. A magnetic holder that can hold the light in various orientations and positions is used to mount it. The creative design is ideal for refugiums and completely waterproof. The Eco Chic Refugium LED Light's LEDs were chosen to promote the rapid growth of green algae. Developed for Magnet Mounting Systems for Refugiums Aluminum Heat Sink with Temperature Sensor Totally waterproof Completely Silent Control A basic timer or any other technique that controls the light's power source in an on/off manner can be used to operate the Tunze Eco Chic 8831.00 Refugium LED. Mounting The contemporary magnetic mounting mechanism