Aqua Ultraviolet UV Replacement Lamp For 57 Watt Classic UV Sterilizer. Aqua Ultraviolet has the longest lamp life on the market with 14 months of continuous use. The Lamps are designed and made from the highest quality hard quartz glass that transmits higher UV intensity and maximizes kill rates. Four-pin single-end connections allow for easy safe lamp changes. Look for the blue tips and the Aqua Ultraviolet Logo.