Amazon.com: Aquarium Clean Light,9W & 11W UV Sanitizer Aquarium Algae Bloom Clean Light with Timer,Submersible Waterproof Lamp for Fish Tank Pond,Water Clean Green Clear Waterproof Clean Lamp for Sump Swim Pool :
110V 11W UV Light Sanitizer, Ultraviolet Germicidal Lamp, UV Light Black Lamp 10 Seconds Of Rapid for Household Germ - Walmart.com
Technical Precision Replacement for TUV 11w Light Bulb 11W UV Germicidal Lamp with G5 Miniature Base - for Air and Water Disinfection - 1 Pack - Amazon.com
ISPRING UV Ultraviolet Water Filter with Smart Flow Sensor Switch, 11W UV lamp UVF11A - The Home Depot