Hygger #969 titanium heater provides a fast and safe way to heat up and maintain proper temperature for your fish.<br><br> <b>Features:</b><br> Fully submersible heater<br> Auto shut off when over-heats, resets when it cools down. <br>Running-dry protection, auto shut off when removed from the water, and resume functioning upon return<br>Shatterproof titanium tube construct, heating fast and corrosion resistant <br>ABS plastic protective case prevents fish from punching and scald<br> External digital controller can easily be adjusted temperature without getting your hands wet <br> Easy to read white LED digital number display shows current water temperature<br>Adjustable heat setting from 70°F to 94°F, electronic thermostat accurate to +/- 1 degrees Fahrenheit differences<br>Ideal for used in 60-180 gal freshwater and saltwater aquariums<br><br> <b>Specification:</b><br> Item name: Hygger Large Titanium Heater<br>Model: HG-969<br>Voltage: 110V-120V, 60HZ<br>Wire length: 5 ft<br>Available In:<br>500 Watt, for 60-120 Gallon fish tank, heat rod measures 7.9 in x 3 in x 1.1 in<br>800 Watt, for 120-180 Gallon fish tank, heat rod measures 9.6 in x 3 in x 1.1 in<br><br> <b>How to set temperature: </b><br> 1. Place heater rod underwater and fix it on the wall<br> 2. Plug in power and you can see LED digital number flashing 3 times and shows current water temperature, red indicator lights on <br> 3. Press set button to the desired temperature which will blinks 3 seconds and starts to heat the water<br> 4. Once it reach desired temperature, indicator light switch to green<br><br> <b>Warm Tips: </b><br> 1. Always keep heater rod submerged. <br> 2. Make sure that the heater doesn’t touch sand or gravel on the tank bottom.<br>3. For gravel-free aquarium, for better result, it is better to place the heater on the bottom <br> 4. Before take out the heater, please disconnect power and wait for 10 minutes to cooling down. <br> 5. Make sure the controller stays in dry