Keep Your Fish Happy & Healthy with Precise Temperature Control

Maintain the perfect water temperature for your aquatic pets with this reliable submersible aquarium heater. Whether you have a small 15-litre nano tank or a large 150-litre display aquarium, the HX-906 series has the right power output for you — from 25W all the way up to 300W. Made in Mainland China.

Why Choose This Aquarium Heater?

Precise Temperature Control: The built-in adjustable thermostat lets you dial in the exact temperature your fish need. The automatic constant-temperature function keeps the water stable, preventing dangerous fluctuations that can stress or harm aquatic life.
IP68 Waterproof Rated: Constructed from high-grade glass and fully submersible. The IP68 rating means you can trust it to operate reliably when completely underwater, giving you peace of mind 24/7.
Safety Protective Cover: Select models include a protective guard that shields your fish from direct contact with the heating element, preventing accidental burns and keeping your tank's inhabitants safe.
Multiple Sizes Available: Choose from four heater lengths — 180mm, 200mm, 235mm, and 300mm — to fit tanks of all shapes and sizes. Each unit comes with a generous 90cm (35.43") power cord for flexible positioning.
Wide Power Range for Any Tank:
- 25W → 15–20 Litre tanks
- 50W → 20–30 Litre tanks
- 100W → 40–60 Litre tanks
- 200W → 80–120 Litre tanks
- 300W → 120–150 Litre tanks
Easy Installation: Strong suction cups are included so you can securely mount the heater against the glass without tools. Setup takes just minutes.
Freshwater & Saltwater Compatible: Works equally well in freshwater tropical tanks, reef aquariums, and saltwater setups. Ideal for tropical fish, shrimp, turtles, and other aquatic life.
EU Plug: Fitted with a standard EU plug for easy use across European countries.

Technical Specifications

Power Options	25W / 50W / 100W / 200W / 300W
Heater Lengths	180mm / 200mm / 235mm / 300mm
Power Cord Length	90cm (35.43 inches)
Waterproof Rating	IP68 (fully submersible)
Plug Type	EU Plug
Compatible Tank Types	Freshwater & Saltwater
Country of Origin	Mainland China

What's in the Box?

1 × Heating Rod (size/wattage as selected)
Suction cups for mounting
Protective cover (included with select models)

Learn More About Aquarium Fish Health

Maintaining stable water temperature is one of the most important factors in keeping healthy fish. For more guidance on aquatic animal care, visit the EPA's WaterSense resource or explore fish-keeping best practices at the U.S. Fish & Wildlife Service Fisheries page.

Frequently Asked Questions

Q: What wattage aquarium heater do I need for my fish tank?

A: As a general rule, you need approximately 1–2 watts per litre of water. This heater range covers tanks from 15L (25W) up to 150L (300W). Select the wattage that matches your tank's volume — for example, choose the 100W model for a 40–60 litre aquarium for optimal and efficient heating.

Q: Is this aquarium heater safe to leave on all the time?

A: Yes. The built-in automatic constant-temperature thermostat cycles the heater on and off to maintain your set temperature, so it is designed for continuous, unattended operation. The IP68 waterproof rating and safety protective cover add extra layers of protection for both your fish and your tank.

Q: Can I use this heater in a saltwater or reef aquarium?

A: Absolutely. This submersible heating rod is fully compatible with both freshwater and saltwater aquariums, making it a versatile choice for tropical fish tanks, reef tanks, shrimp tanks, and more.

Q: How do I install the aquarium heater?

A: Installation is straightforward. Attach the included suction cups to the heater, then press them firmly against the inside glass wall of your aquarium. Position the heater diagonally or vertically for the best heat distribution. Always allow the heater to adjust to the water temperature for 15–30 minutes before plugging it in.