Hygger 800W Submersible Fish Tank Heater

The aquarium heater boasts two key safety features: automatic power-off and an audible alarm. This ensures the well-being of your aquatic pets.

Overheating Protection: The heater is equipped with dual temperature probes built into the heating rod. When the water temperature exceeds 94°F (34°C), the probes immediately detect the current temperature and automatically stop heating to prevent the fish from being cooked. Simultaneously, the controller displays the "HH" error code and flashes "Hi" to alert the owner.

Low Temperature Protection: When the temperature probe detects the water temperature dropping below 59°F (15°C), the heater will automatically start heating, and the controller will sound an audible alarm while displaying the "LL" error code and flashing "Low" to indicate the low temperature.

Anti-Dry Operation: If the heater's temperature sensor detects a lack of water, it will automatically stop heating to avoid dry burning. The controller will then sound an alarm, display the "L1" error code, and flash "Auto Off." This safeguards against potential fire hazards.

Note: When changing the water, first unplug the power and allow the heating rod to cool down before removing it from the water. This prevents burns from the residual heat and damage to the heater's shell.

This heater is suitable for both freshwater and saltwater tanks, with wattage options ranging from 400W (40-80 gallons) to 1000W (130-260 gallons), all with a temperature control range of 59-90°F.

The built-in dual temperature probes work alternately to prevent both overheating and overcooling, ensuring the safety of your fish. The audible alarm and automatic shut-off function provide additional safeguards.

We offer a 12-month warranty, and our customer service team is available to address any questions or concerns you may have.

To choose the most suitable wattage, use the formula: Fish tank (length x height x width) + 1000 x 2 = the required wattage.

The external digital controller features an LCD display that shows the current water temperature, set temperature, and heating status. It allows you to adjust the temperature without getting your hands wet, and you can switch between Fahrenheit and Celsius by pressing and holding the setting button for 2-3 seconds. The temperature adjustment range is 59-93°F, with an accuracy of ±0.1°F.

The heater's stable nickel-chromium electric heating wire, thickened quartz glass explosion-proof tube, and protective ABS plastic shell ensure even and efficient heat dissipation, helping to maintain a safe and consistent water temperature while reducing electricity costs.

Additionally, the heater features a memory function, ensuring that the set temperature is retained even after a power outage. This makes it ideal for use when you're away on vacation.

The aquarium heater comes with three suction cups, a controller bracket, and a hook, as well as a 10-foot power cord for easy installation.

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