Description
Flow Heater BT – Smart External Bluetooth Aquarium Heater
The Aquael Flow Heater BT is an advanced external aquarium heater that combines intelligent Bluetooth control, precise temperature regulation, and flexible power adjustment in a single device. Installed outside the aquarium on the canister filter outlet hose, it saves valuable space inside the tank while providing uniform water heating for both freshwater and marine aquariums.
Using the Aquael BT mobile app, you can remotely monitor and adjust your aquarium temperature directly from your smartphone or tablet. Set temperatures with an impressive 0.1°C accuracy, choose between 19°C and 33°C (66.2–91.4°F), monitor temperature history, and receive notifications whenever heating parameters change.
Unlike traditional heaters, the Flow Heater BT features an adjustable power range from 50 W to 500 W, allowing the same heater to be used with aquariums from 60 to 1,000 liters. As your aquarium grows, your heater grows with it—simply adjust the output through the app without replacing the unit.
Smart Heating System (SHS)
The integrated Smart Heating System (SHS) continuously adjusts heating power using a built-in microprocessor to maintain a stable water temperature while minimizing energy consumption. Smooth temperature regulation eliminates sudden fluctuations that can stress fish and aquatic plants.
Bluetooth App Control
The Aquael BT app gives you complete control over your heater:
- Set the desired water temperature with 0.1°C precision.
- Adjust heater output from 50 W to 500 W.
- Monitor the current water temperature in real time.
- View up to 7 days of temperature history.
- Receive heating alerts and notifications.
- Choose Celsius or Fahrenheit.
- Secure settings with a personal PIN code.
Day & Night Temperature Mode
Recreate natural environmental conditions with Day & Night Mode. Program different daytime and nighttime temperatures, along with customizable sunrise and sunset transitions of up to 180 minutes. The gradual temperature changes reduce stress and help create a more natural habitat for aquarium inhabitants.
Safety Features
Designed for maximum reliability, the Flow Heater BT includes:
- Five electronic temperature sensors.
- Automatic dry-run protection.
- Overheat protection.
- Automatic shutdown when water flow stops.
- Fully electronic thermostat.
- Break-resistant construction.
Easy Installation
The Flow Heater BT is installed externally on canister filter hoses, keeping the aquarium free from visible equipment and improving aquascaping possibilities. Interchangeable fittings allow installation on 16/22 mm and 19/25 mm hoses.
The housing can be mounted using the included suction cups or fixed inside the aquarium cabinet for an even cleaner installation.
Key Features
- Smart Bluetooth-controlled external aquarium heater.
- Remote control via the Aquael BT app.
- Adjustable power from 50–500 W.
- Temperature range: 19–33°C.
- Precision temperature control (±0.1°C).
- Smart Heating System (SHS) for stable heating.
- Day & Night temperature programming.
- Built-in thermometer with temperature history.
- Energy-efficient operation.
- Overheat and dry-run protection.
- Suitable for freshwater and marine aquariums.
- Fits 16/22 mm and 19/25 mm filter hoses.
- Recommended for aquariums from 60–1,000 liters.
Why Choose Aquael Flow Heater BT?
- Save space with an external heater installation.
- Monitor and control heating from your smartphone.
- One heater adapts to multiple aquarium sizes.
- Maintain stable temperatures with intelligent power regulation.
- Enjoy safer, more energy-efficient heating for healthier aquatic life.

