Submersible Aquarium Heater for Fish Tanks 0.5-40 Gallons

The heater starts heating when the 'SET' button is pressed to adjust the temperature. The temperature can be accurately adjusted from 64 to 93°F, with the temperature increasing by 1°F for each press of the button. After 3 seconds of no operation, the setting is confirmed and activated. A red indicator light turns on to signify the heater is in operation.

The heater automatically stops heating when the set temperature is reached, and a green indicator light turns on. Automatic constant temperature is maintained with an accuracy of 1°F, achieved through the heater's variable frequency mode based on PID control strategy.

Two protection features are included: out-of-water protection (E1) and overheating protection (H1). If the heater is not fully submerged in water or if the water temperature exceeds 95°F, the power will be cut off and heating will stop automatically. The heater will resume operation once the issue is resolved.

A size chart is provided to help choose the appropriate heater based on the aquarium volume: 25W for 1-5 gallons, 50W for 5-10 gallons, 100W for 10-20 gallons, 150W for 15-30 gallons, 200W for 20-40 gallons, and 300W for 30-60 gallons. The heater's voltage range is 100-130V, and the power cord length is 4.2 ft.

The compact design of the heater allows for easy installation and takes up minimal space in the fish tank, making it suitable for mini aquariums. The external temperature controller allows for easy temperature adjustment without getting your hands wet. The digital LED display provides a clear indication of the water temperature, and the built-in thermometer ensures accurate readings.

The intelligent indicator light system, with green for no heating and red for heating, provides visual feedback on the heater's status. The 1°F accuracy is achieved through the Intelligent Frequency Conversion Technology, and the heater will remember the temperature setting, eliminating the need to reset it after a power outage.

Cautions include the requirement for the heater to be fully submerged in water, keeping the external temperature controller away from water as it is not waterproof, and regularly cleaning the heater surface and LED screen. Additionally, it is recommended to disconnect the power and wait 15 minutes before changing the water or removing the heater.

The 100W aquarium heater is designed for 10-20 gallon fish tanks, with a temperature range of 64-93°F, and is suitable for both saltwater and freshwater environments. The compact size and automatic thermostat with 1°F accuracy make it an ideal choice for mini fish tanks.

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