ISPRING UV Ultraviolet Water Filter with Smart Flow Sensor Switch, 11W UV lamp UVF11A - The Home Depot
11W UV Bulb for EHEIM reeflexUV 800 7315308 UVC
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 :
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