Aquarium temperature controller AQUAEL 121218, temperature range 20–33 °C

AQUAEL 121218 is an aquarium temperature controller designed to maintain a stable water temperature between 20 and 33 °C. The compact unit monitors aquarium heaters and switches them on or off to keep the selected temperature, supporting steady conditions for fish, plants and invertebrates. Lightweight and easy to install, this controller is intended for hobby and small professional aquaria that require reliable, straightforward temperature regulation.

Advantages

The controller offers a clearly defined temperature range of 20–33 °C and automatic switching of connected heating devices to maintain the setpoint. Its compact size and low package weight make handling and installation simple, while compatibility with standard aquarium heaters allows flexible use. The unit provides constant monitoring to reduce temperature fluctuations and helps protect aquatic life from thermal stress.

Suitable for

• Freshwater and marine aquaria where temperature must be maintained within 20–33 °C
• Small hobby tanks and nano-aquaria
• Breeding setups requiring stable thermal conditions
• Research or educational aquaria with moderate temperature control needs

Key specifications

• Temperature control range: 20–33 °C
• Function: monitors and switches heating devices to maintain set temperature
• Compact physical dimensions suitable for small installations
• Lightweight design facilitating easy mounting and handling

How to use

Mount the AQUAEL 121218 controller near the aquarium following any included mounting instructions and connect it to the aquarium heater and mains power. Set the desired temperature within the 20–33 °C range using the controller’s adjustment mechanism. The device will then monitor the water temperature and switch the connected heater on or off to maintain the setpoint. Periodically verify the water temperature with a separate thermometer to confirm proper operation and recalibrate or adjust the setpoint if necessary.

Usage recommendations

Install the controller in a dry, accessible location and ensure electrical connections meet local safety standards. Use a reliable aquarium thermometer to cross-check readings after installation. Avoid setting temperatures outside the 20–33 °C range and select an appropriate heater wattage for the aquarium volume to ensure efficient regulation.