Product Description The output of the high frequency tube in mW/cm 2 is about 8 times higher than in PL UVC lamps and 2 times higher than with a T5 UVC lamp. If your UV-C Filter has been continuously used during a pond season, its light output will have decreased. It is advisable then to replace the light. Box Contains 1 x 80 Watt T6 UV-C Lamp
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