TETRA 9 WATT UV REPLACEMENT LAMP NO REFUNDS OR EXCHANGES ON REPLACEMENT BULBS! ** Manufacturer recommendation is to service your filter once every year to year and a half ( 12 - 18 months ) Service PLS9 Tetra Greenfree UV1 1800 Brand NEW in the BOX INCLUDES: ONE - 9 watt REPLACEMENT UV BULB A UV Filter will lose its effectiveness if you do not regularly service the components. This can result in green pond !
