HITOP Fish Tank Heater with External Controller Power: 200W 300W 400W HITOP Aquarium PTC Heater with External Digital Controller 200W for 25-60Gal tank;300W for 40-80Gal tank；400W for 55-100Gal tank;Voltage: 110-120V/60Hz; Cable length:6ft/1.8MCeramics PTC Heating material: PTC means positive temperature coefficient, as a heating material of aquarium heaters, has the advantages of high heating efficiency, long service life and safer. Digital External Controller Indicator: Green means heating finished/Red means heating stateTemperature Display: Can display the real-time temperature and set temperature of the fish tankMemory function：Automatically maintain the temperature setting before power failure ℉/ ℃ Switch / Adjustable range：68-93℉ Suitable for Fish tank/Turtle tank Suitable for Saltwater/Fresh Water Features of this aquarium heater Removable protective cover It's convenient to clean the heating part of this fish tank heater Heat dissipation holes The maximum diameter of holes is 0.6in. Any fish larger than 0.6in can be used with confidence. Long power cable Longer power cord makes installation easier and suitable for deep fish tanks. Accessories Powerful suction cup*5(It is enough to install 2 suction cups for this heater.) Sticker thermometer*(it can display the fish tank temperature) HITOP Aquarium heater 200W/300W/400W/500W/600W/800W 200W/300W/400W Add to Cart 400W/600W Add to Cart 600W/800W Add to Cart 600W/800W Add to Cart 600W/1000W Add to Cart Customer Reviews 4.3 out of 5 stars 355 4.4 out of 5 stars 30 4.2 out of 5 stars 625 4.3 out of 5 stars 216 4.3 out of 5 stars 90 Price $27.89$27.89 $26.97$26.97 $40.97$40.97 $42.97$42.97 $59.89$59.89 Heating material Ceramic PTC Heating Wire titanium alloy titanium alloy Ceramic PTC Temp setting method: External digital controller External controller External controller External controller Adjustable knob Temp display Temp display on controller Temp display on heater Temp display on heater Temp display on heater Temp display on controller Cover removable ✔ ✔ ✘ ✘ ✘ Saltwater and freshwater ✔ ✔ ✔ ✔ ✔