The Arc Pod is a waterproof, self contained, clip on fluorescent light unit suitable for all freshwater aquariums : tropical or coldwater. With built in reflector, the lens can be removed and replaced easily, making lamp changing simple Designed to mount onto tanks (glass width 4-12mm) for open top tanks, or to the underside of an aquarium hood for increased flexibility The Arc Pod can be tilted to a vertical position for easy access Easy to fit Waterproof (IP67) Low maintenance Easy lamp change Built in reflector Lamp included Each Arc Pod unit comes complete with UK 3-pin pre-wired transformer, cable with on/off switch, Arc Pod clip-on lamp unit, and a compact single ended double filament Original Tropical Fluorescent lamp Dimensions : Lamp Unit : 21cms long x 9cm x 5cm Comes with 2 metres of mains cable