Submersible Aquarium Heater Rod 50W/300W – Fish Tank Temp Control

Submersible Aquarium Heater Heating Rod – 50W / 300W

Keep your freshwater fish thriving with this fully submersible aquarium heater. Designed with waterproof double insulation and a built-in thermostat, it maintains a steady, consistent water temperature so your fish stay comfortable year-round. The easy-to-read temperature scale lets you dial in the exact setting you need — no guesswork required.

Made in Mainland China.

Key Features

• Adjustable Temperature Range: 20–34°C (68–93°F) to suit a wide variety of freshwater fish species
• Fully Submersible Design: Waterproof double insulation for safe, worry-free operation inside your tank
• Power Indicator Light: LED indicator lets you know at a glance when the heater is actively working
• Auto Temperature Regulation: Built-in thermostat automatically maintains your chosen water temperature
• Two Wattage Options: 50W (ideal for small tanks) or 300W (for larger aquariums) — choose the right size for your setup
• EU Plug Compatible: 220–240V, 50/60Hz

Specifications

Important Usage Notes

1. This heater is designed for freshwater aquariums only — not suitable for saltwater use.
2. The heating rod must be fully submerged at all times during operation. Never allow it to be exposed above the waterline.
3. The indicator light will illuminate when the heater is actively heating.
4. Before cleaning your tank or the heater, turn off the power and allow 15–20 minutes for the rod to cool down completely before handling.

What's in the Box

• 1 × Aquarium Heating Rod (50W or 300W — as selected)

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Frequently Asked Questions

Q: What size tank is this aquarium heater suitable for?

A: The 50W heater is best suited for small freshwater aquariums (typically up to 50 litres), while the 300W version is ideal for larger tanks. As a general guide, allow approximately 1W of heater power per litre of water for best results.

Q: Can this heater be used in a saltwater or marine aquarium?

A: No — this submersible heating rod is designed for freshwater use only. Using it in saltwater may damage the unit and void any warranty.

Q: How do I set the temperature on this aquarium heater?

A: Simply rotate the adjustment dial on the top of the heater to your desired temperature within the 20–34°C (68–93°F) range. The built-in thermostat will then automatically switch on and off to maintain that target temperature, and the LED indicator light will show when it is actively heating.

Q: Is it safe to leave this heater running continuously?

A: Yes. The heater features waterproof double insulation and an automatic thermostat, making it safe for continuous operation when fully submerged. Always ensure the rod remains completely underwater and the power is switched off and the unit allowed to cool before any maintenance.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.