100W–500W Submersible Aquarium Temperature Regulator for Fish Tanks - 300W

Create a consistent and comfortable aquatic environment with this submersible temperature controller, suitable for both freshwater and marine aquariums. Designed for reliable use, it features manual temperature adjustment, a shatter-resistant glass structure, and a protective outer shell to ensure long-lasting performance. The built-in thermostatic system maintains water temperatures from 13°C to 34°C (55°F to 92°F), supporting the well-being of your aquatic pets.

Its intelligent warming cycle, alternating between 7–8 minutes of active warming and a 2-minute pause, helps prevent overheating and prolongs device life. The unit attaches securely to tank walls with dual suction cups, and the 1.9-metre power cable ensures flexible positioning.

Features

• Submersible temperature control device for freshwater and saltwater aquariums

• Manual adjustment dial for temperatures between 13°C and 34°C (55°F–92°F)

• Durable explosion-resistant glass with a protective outer shell

• Indicator light shows real-time heating status

• Intermittent warming cycle improves temperature stability and efficiency

• Strong suction cups for secure and stable mounting

• Extended 1.9m power cord for flexible setup

• Available in 100W / 200W / 300W / 500W versions, compatible with different tank sizes

Specifications

• Material: Shatterproof glass + ABS cover

• Voltage: 220–240V / 50–60Hz

• Temperature Range: 13°C–34°C (55°F–92°F)

• Power Cord Length: Approx. 1.9m

• Diameter: Approx. 2.2cm

Device Length & Tank Suitability:

• 100W: 25cm (for 50–100L tanks)

• 200W: 29cm (for 100–150L tanks)

• 300W: 33cm (for 150–200L tanks)

• 500W: 37cm (for 200–300L tanks)

Package Includes

• 1 × Submersible Temperature Controller (CN plug or CN plug + AU adapter)

• 2 × Suction Cups

Notes

• This product uses a Chinese CN plug by default.

• Please choose the correct option from the listing:

  • Device with CN plug

  • Device with CN plug + AU adapter

  • AU adapter only (no device included)

• Must be fully submerged during operation.

• Unplug at least 15 minutes before water changes or removal.

• Allow for 1–3cm variance due to manual measurement.

• Colour may slightly differ due to lighting or display.

• Regular cleaning helps maintain optimal performance.