hygger 10-75 Gallon Small Aquarium Heater: LED Display, Quartz Submersible Fish Tank Heater 100W/200W/300W Saltwater Freshwater Review

【Auto Shut Off】 1Automatic overheat system will shuts the unit off when the water temperature over 95°F. 2 Running dry protection will shut off unit when the heater rod out of water. 3 The power cord 6.3 feet in length and is UL listed. 【Adjust the Temperature to Your Needs】 Equipped with an Intelligent IC temp controller, which will turn the heater off when it reaches a preset temperature and turn the heater back on when the temperature dips below the setting. Adjust the setting of temperature from 59°F to 93°F to keep aquarium proper temperature. 【 At-a-Glance Temperature Monitoring Controller】 Build in LED temp controller shows both set temperature and real time water temperature . Red indicator light turns on when heating and turns blue in the situation reached set temp or failure alarm. It can be accurate enough to keep temperatures with +/- 1 degrees. 【Shatter Resistant, Efficient】 The 100w fish tank heater with shatter-resistant quartz glass heating element & uses a nickel-chromium heating wire that provides faster and more efficient heating. Fish heater guard is made of high-temperature PC plastic and to protects your fish getting burn. It also has two-hole slots on the back make it easy for installation to walls by suction cups. 【Fully Submersible Heater】It needs set up either vertically or horizontally underwater at least 5 inches for proper function. Suitable for marine and freshwater tank with a volume of between 25 and 50 gallons. Memory function it remembers the temperature you set it when the power fails.