Small Submersible Aquarium Heater with Temperature Controller

The heater comes in various sizes - 25W, 50W, 100W, and 200W - suitable for aquarium volumes ranging from 1-5 gallons to 15-40 gallons. The rated voltage is 100-130V and the temperature range is 64-93°F. Featuring automatic constant temperature control with 1°F accuracy, this heater utilizes intelligent frequency conversion technology to maintain the water temperature precisely. The heater's working frequency adjusts according to temperature variations, automatically stopping heating when the set temperature is reached. Compared to traditional heaters, this technology can reduce your electricity bill by up to 49%.

To set the temperature, simply press the 'SET' button on the external controller. Each press will increase the temperature by 1°F until the target value is reached. After 3 seconds of no input, the setting is confirmed and activated. The heater will then begin heating, with a red indicator light turning on. Once the set temperature is achieved, the heating will stop automatically, and a green indicator light will illuminate.

Equipped with safety features, this heater provides out-of-water and overheating protection. If the heater is not fully submerged or the water temperature exceeds 95°F, the power will be cut off, and the heating will stop automatically. Error codes 'E1' and 'H1' will be displayed, and the heater will resume operation once the issue is resolved.

The compact, small-sized design of this heater makes it perfect for mini fish tanks. It takes up minimal space and is easy to hide within the aquarium. The external temperature controller allows you to adjust the settings without ever getting your hands wet, eliminating the need to reach into the water. The digital LED display makes the temperature easily readable, and the built-in thermometer provides real-time water temperature monitoring.

The heater features a power-off memory function, so it will remember the previously set temperature, eliminating the need to reset it after power interruptions. Additionally, the dual temperature sensors ensure accurate temperature readings and control.

Regular maintenance is essential for the longevity of this heater. The suction cups should be cleaned monthly to maintain their grip and prevent the heater from falling and breaking. Before installation, it is crucial to inspect the glass tube for any cracks or damage, as a cracked (but not fully broken) tube should not be used.

In summary, this compact, high-performance aquarium heater offers reliable temperature control, safety features, and convenient operation, making it an ideal choice for mini fish tanks. Its energy-efficient design and smart memory function further enhance its user-friendly appeal.

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