Hygger Aquarium Heater for Freshwater and Saltwater Fish (600W)

The aquarium heater comes with two key safety features: automatic power-off and an audible alarm. Its overheating protection system is designed to safeguard your aquatic pets. When the water temperature exceeds 94°F (34°C), the dual temperature probes built into the heating rod will immediately detect the current temperature and automatically stop heating to prevent the fish from being cooked. At this time, the controller will simultaneously display the error code "HH" and flash "Hi" to remind the owner.

Conversely, the low temperature protection feature ensures that when the temperature probe detects the water temperature dropping below 59°F (15°C), the heater will automatically begin heating, while the controller sounds an audible alarm and displays the "LL" and flashing "Low" error codes, until the water temperature rises above 59°F.

Additionally, the anti-dry operation function is a crucial safety measure. When the heater's temperature sensor detects a lack of water, the heater will automatically stop heating to avoid dry burning. Concurrently, the controller will sound an audible alarm, display the "L1" error code, and flash "Auto Off". This helps prevent potential fire hazards. When changing the water, be sure to unplug the power and allow the heating rod to cool down before removing it from the water, to avoid burns from any residual heat.

This aquarium heater is suitable for both freshwater and saltwater tanks, available in 400W, 600W, 800W, and 1000W models to accommodate tank sizes ranging from 40 to 260 gallons. The control range is 59-90°F.

The built-in dual temperature probes alternately measure the water temperature to prevent both overheating and overcooling, ensuring the safety of your aquatic pets. The audible alarm and automatic shut-off functions provide additional safeguards.

We offer up to one year of after-sales support, so you can count on us to address any questions or issues that may arise.

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

This heater features an accurate external digital controller with an LCD display, allowing you to easily monitor the current water temperature, set temperature, and heating status, without needing to wet your hands. The temperature adjustment range is 59-93°F, with an accuracy of ±0.1°F. You can also switch between Fahrenheit and Celsius by pressing and holding the setting button for 2-3 seconds.

With its stable, fast, and even heat dissipation, long-lasting durability, and memory function that retains your settings even after power outages, this adjustable aquarium heater is a reliable choice for keeping your aquatic friends safe and comfortable.

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