EHEIM Jager Trutemp Aquarium Heater 9" 25 Watt {L+1} 207085

720/540 Completely Waterproof Submersible Heater Heavy Duty 2mm Thick Shock Resistent Pyrex Tube 2x As Thick As Most Heaters. 64-94 Degree Range Easy To Adjust Thermostat Bistable Thermostat Is +/- .05 And Free From Radio And Tv Interference Ul/csa Approv