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

The aquarium heater comes with two key safety features: automatic power-off and an audible alarm. The built-in dual temperature probes constantly monitor the water temperature to prevent overheating or overcooling.

Overheating Protection: When the water temperature exceeds 94°F (34°C), the probes immediately detect the high temperature and automatically stop heating to protect the fish from being cooked. The controller will display the "HH" error code and flash "Hi" to alert the owner.

Low Temperature Protection: If the temperature probe detects the water has dropped below 59°F (15°C), the heater will automatically start heating. An audible alarm will sound, and the controller will show the "LL" error code and flash "Low" until the water warms up above 59°F.

Anti-Dry Operation: The heater's temperature sensor can detect when there is insufficient water. If a low water level is sensed, the heater will automatically shut off to prevent dry burning. The controller will sound an alarm, display the "L1" error code, and flash "Auto Off".

Note: When changing the water, unplug the power and allow the heating rod to cool before removing it from the tank, to avoid burns from residual heat.

This adjustable heater is suitable for both freshwater and saltwater aquariums: - 400W model for 40-80 gallon tanks - 600W model for 66-135 gallon tanks - 800W model for 80-220 gallon tanks - 1000W model for 130-260 gallon tanks All models have a temperature control range of 59-90°F.

The built-in dual temperature probes and audible alarms ensure the heater will not overheat the fish or allow the tank to become too cold. If any issues arise, the controller will display error codes and activate the alarm.

We offer a 1-year warranty and responsive after-sales support to address any problems that may occur.

To choose the right wattage, use the formula: tank volume (length x height x width) / 1000 x 2 = required heater watts.

The external digital controller allows easy temperature adjustment without getting your hands wet. It displays the current and set temperatures, as well as heating status. The controller and heater are separate for enhanced waterproofing.

This heater uses stable nickel-chromium heating wire, an explosion-proof quartz glass tube, and a protective ABS plastic shell to ensure even, fast heat dissipation and long-term energy efficiency.

It also has a memory function to retain your temperature settings, even after a power outage. Three suction cups, a controller bracket, and a 10ft power cord make installation simple.

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