Key features

• •Designed for Long-Term and Safe Use: This 300W aquarium heater is suitable for tanks ranging from 20 to 75 gallons. Built with highly stable materials and craftsmanship, it is resistant to saltwater corrosion, making it ideal for both freshwater and marine tanks. Features an adjustable temperature range of 59–93°F, this fish tank heater ensures long-term stable performance while accommodating the needs of various aquatic species.
• •Enhanced Safety Design: Heater for fish tank features a grounded three-prong plug to prevent the risk of electrical leakage. The heating element is sealed within a thickened explosion-proof quartz tube, ensuring safety. The detachable ABS flame-retardant cover offers impact protection and prevents fish from directly contacting the heater. The fish tank water heater is certified with an IPX8 rating, ensuring its safety for long-term underwater operation.
• •Advanced Heating Program: This intelligent aquarium heater features dual independent probes detecting temperature, and a PID control system for accurate, real-time temperature regulation. When the temperature difference is large, the heater uses high power for rapid heating. As it nears the target, the system reduces heating power to avoid overshooting and conserve energy. This advanced system creates a comfortable environment for your fish, all while minimizing energy consumption and lowering electricity costs.
• •Precise Temperature Control: When the heater begins operating, it steadily raises the water temperature to the target level before pausing. Meanwhile, the temperature probes continuously monitor real-time conditions. If the controller detects that the current temperature drops more than 0.2°F below the target, the heater automatically restarts, maintaining the water at an optimal and precise level. And the nickel-chromium wire and ceramic structure provide even heat distribution, preventing overheating or underheating.
• •Smart Protection Program: The water heater for fish tank comes with two intelligent safety protection features, automatically stopping the heating process and displaying error codes when an issue is detected.(1)Out-of-Water Protection: The heater must be fully submerged. If the top sensor detects that the heater is not, it will stop heating and display the error code E1. (2)Overheating Protection: If the water temperature exceeds 97F, the heater will cease heating and display the error code HH.
• •Easy to Use for Everyone: The external controller features two simple buttons for easy setting. With a clear display showing the current temperature and heating status, it allows you to quickly check your aquarium's condition at a glance. Please note that the submersible aquarium heater must be fully submerged in water before being powered on. Please ensure it is unplugged before removal. Regular cleaning of the heater and suction cups is recommended.