Quartz Sleeve for Emperor Aquatics FL-2940 Brand_Ushio The lamp makes use of

The lamp makes use of UVC light to deactivate bacteria

Guaranteed Replacement Ultraviolet (UV) Bulb - 4 Pin - 41 Watts - 33

Hanovia # 6555A431

GPH287T5L/4 Germicidal UV Purifier/Sanitizer Light Bulb

Quartz Sleeve for Emperor Aquatics FL-2940 Brand_Ushio The lamp makes use ofReplacement Quartz Sleeve for Emperor Aquatics FL 2940 Dimensions 25 x 28 x 1905mm Domed (Closed on One End) In order for your germicidal water system to work effectively, it is imperative that the quartz sleeve is completely clear. A foggy or dirty quartz sleeve can significantly attenuate the power of your UVC bulb, resulting in substantially less sterilizing power. A good way to think about it is that if you have trouble seeing through the sleeve