Hygger Submersible Fish Tank Water Heater for Freshwater and Saltwater Tank

The dual temperature control system features one chip with two independent heating systems. If the temperature control system of one heating rod fails, the other rod's temperature control system can continue to function, reducing the risk of frozen fish in the tank caused by heating rod damage and ensuring consistent tank temperature.

The heating speed is adjustable, with the two heating tubes having independent temperature control and a range of 64-93°F. The evenly wound 20 nickel-chromium electric heating wires dissipate heat evenly at 360°, allowing the heating speed and power to be controlled by individually adjusting the temperature of each rod.

The full immersion heater is easy to operate, equipped with three suction cups for secure installation in any corner of the fish tank. The outer shell can be slid away, making cleaning more convenient. Temperature adjustment is simple, with a top knob for direct rotation, and the sealed waterproof plastic protects the internal chip, improving durability.

Accurate temperature control is ensured by two sets of temperature measurement systems with built-in dual temperature probes that monitor the current water temperature in real-time. The heating stops when the set temperature is reached and resumes when it drops below the set point, with the temperature control error kept within ±1°F.

The heater is suitable for seawater and freshwater fish tanks, fighting fish tanks, turtle tanks, and more. The 600W model is suitable for 66-132-gallon fish tanks, while the 800W model is suitable for 80-220-gallon tanks. When installing, the heater must be completely submerged in water and not placed on sand or gravel.

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