NICREW 300W Aquarium Heater with Temperature Adjustable Controller & Dual Sensors, 50-80 Gallon Submersible Fish Tank Heater, Overheat Protection

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About This Temperature Adjustable: External controller features power-off memory function, allowing easy adjustments without wetting hands Precise Temperature: Dual temperature sen sor technology for accurate temperature readings Overheat Protection: The heater automatically turns off when water temperature exceeds 98℉(36°C) to prevent overheating, ensuring safety Efficient Heating: Nickel-chromium alloy heating element for rapid heat-up. Magnesium oxide filling ensures efficient heat transfer into the water Easy Installation: Includes suction cups for secure attachment to the aquarium wall. It is recommended that the heater be fully immersed in water and placed in an area with good water circulation to minimize temperature error Show more