PL-S9W/TUV GERMICIDAL BULB FOR AMERICAN UV, CATFISH LIGHTING, CYPRIO, GERM GUARDIAN, TETRA POND PL-S9W/TUV UV GERMICIDAL bulb replacement. Total UV output: 2.4 watts. American Ultraviolet AP600, GML370, RM-9U-105; Catfish Lighting 9 Watt; Coral Life 77082, 3x; Cyprio Hozelock Vorton BioForce 1000, Vorton 1000, Vorton 2000, Vorton 4000; Germ Guardian EV9LBL; Tetra Pond UV1, UV1 Pond Clarifier; Philips PL-S9/TUV