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The radiation from ultraviolet light at 2537 angstroms provided inside the Lifegard Ultraviolet Sterilizer exerts a lethal effect on microorganisms. UV light alters generic material within the cells, which interrupts respiration or reproduction. UV light, when properly used, is extremely beneficial in destroying disease-causing pathogens as they pass through the unit. UV sterilization is an effective method of disease control. Four major factors affect the percent kill of free-floating microorganisms by UV radiation. (1) Size of organisms (2) Radiation level (3) The extent to which UV rays penetrate the water and (4). Contact time in which the microorganism is exposed to the UV radiation.

Pure hard quartz material in the bulb dramatically increases UV output 35% compared to other conventional bulbs of equal wattage. Pure quartz material resists solarization and improves longevity of the bulb.

Unique test tube style pure quartz sleeve isolates the bulb from water contact preventing thermal shock, broken glass and mercury contamination of the aquarium. The quartz sleeve isolates the bulb to provide an optimal bulb operating temperature of 1000F. This higher bulb temperature increases UV output an additional 35% over conventional units without sleeves.

Bulb changing is the easiest in the industry. Simply slide the old bulb out and slide the new bulb in. No need to shut down the filter system or turn off the pump. Bulb and ballast connect together with a single 4-pin connector. Slowing down the flow rate or increasing the total wattage in the system can increase UV radiation levels. UV sterilization is most effective when used as the final stage of the filtration system. For optimum results, Rainbow recommends UV bulbs must be replaced yearly.

Lifegard Ultraviolet Sterilizers are available in vertical or horizontal models from 8 watts up to 240 watts. (Available at Big Al’s)

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