ETH In-Line Heater 200 watt, 1/2"

Prevents temperature variations caused by poor water circulationPrecise, accurate temperature settingIndicator light shows when unit is "ON"Double insulated and double sealedThe first compact aquarium heater that operates externally, saving interior aquarium space. Installs vertically in the return line of a canister filter or sump, allowing better heat distribution as water returns to the aquarium. Built-in clamps for easy plumbing, and temperature adjusts from 65-93F on an ergonomic knob. Durable, plastic casing protects internal parts. Indicator lights up when heating. 5-1/2 ft cord. UL-Listed.UnitWattsIn/OutFor Aquariums2002001/2"26-53 gallons2002005/8"26-53 gallons3003005/8"53-80 gallonsPlease click on "More Information" for additional features and installation instructions.