Tech'n'Toy SunSun 9 Watt UV Replacment Bulb G23 2 Pin Base for JUP-01, HW-303B, HW-304B, CF400UV, CF500UV Replacement bulb for SunSun & Aquatop Canisters, UV Sterilizers and Pond Pumps Also works with Tetra, Helix Max, Turbo-Twist, GreenFree and JBJ Submariner UV units Average Life Hour: 8,000hrs G23 2 Pin Base Power: 9 watts