Air Aqua Super UV Amalgam 75 watt replacement unit Very high efficiency 13,000 burning hours clear water UV radiation power decreases less quickly during life More resistant to switching the lamp on and off Cable length: 5 m Lamp length: 73 cm It is advisable to always place the ballast in a warm, dry room when it is switched off, so not in a damp filter pit, outside or in a damp shed. This prevents condensation on the printed circuit board. Please note: every time an Air-Aqua super UV lamp is switched on and off (for example due to a dry-running protection), the lamp loses about 24 burning hours at a time.