12W in Line UV Light Sterilizer for Aquarium Algae Control with 12 Watt UVC Bulb Stainless Steel Ultraviolet Clarifier Green Killing Machine Algae Remover for Pond

coospider-repta 12W Inline Aquarium UV Light Clarifier for Koi Pond Small Pool Filter Cold Plunge UVC Light Stainless Steel Ultraviolet Green Killing Machine Fish Tank Algae Control

coospider-repta GPH287T5L/4P 12W UVC Bulb Replacement UV Bulb for STUV-12