Strong, Steady Heat for Big Tanks and Ponds
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Keep your water friends cozy with reliable, even warmth.
This 1000W Submersible Aquarium Heater warms large aquariums and pond tanks with steady, gentle heat. It uses a simple adjustable thermostat to help you set the right temperature for your fish. The waterproof build and overheat protection add peace of mind while it works quietly in the background.
Easy, steady, and ready for your biggest tanks.
✔ Great for 75–250 gallon aquariums and ponds
✔ Simple temperature control from 20°C to 34°C
✔ Overheat protection for safe use
Place the heater where water can flow freely around it. Let it cool before removing it from the tank. Do not plug in the heater until it is fully underwater.
We are proud to offer duty-free, reliable, tracked shipping— delivered to your door in over 200 countries worldwide!
Below you can check our average shipping times:
Domestic USA Shipping: 2-9 business days
US & Canada: 7-18 days
Europe: 7-18 days
Europe Plus*: 8-30 days
Australia, New Zealand: 7-18 days
Hong Kong, Singapore: 7-18 days
Rest of the world: 8-30 days
*does not include processing times up to 2 business days or longer in peak periods
Primarily we ship out from fulfillment centers in the United States, Eastern Asia and Western Europe. If the item you've purchased is out of inventory in your nearest location, we'll send it directly from our production lines at the same delivery times as stated in our shipping section.
What tank size is this heater best for?
It works well in large aquariums and ponds around 75–250 gallons.
Can I adjust the temperature easily?
Yes. The heater has an adjustable thermostat from 20°C to 34°C.
Is it safe to fully submerge this heater?
Yes. It is designed to be fully submersible with a waterproof build.
Keeps water temperature stable so your fish stay comfortable.
Adjust the heat level with a simple thermostat for different tank needs.
Built-in overheat protection gives you added peace of mind.
Made with corrosion-resistant materials for long-lasting use.
Ideal for large aquariums and pond tanks needing strong, even heating.
A stronger, safer choice for large aquariums and ponds.
| Features | MK Aquarium | Knock-Offs |
|---|---|---|
| Adjustable thermostat | ||
| 1000W high heating power | ||
| Overheat protection | ||
| Fully submersible design | ||
| Durable, corrosion-resistant build | ||
| Wide 20°C–34°C range | ||
| Great for 75–250 gallon tanks | ||
| Even heat distribution | ||
| Reliable for indoor or outdoor ponds | ||
| Quiet heating operation |
Yes. Its waterproof and durable build makes it a good fit for many outdoor pond setups.
Place it where water moves well, and it will help spread heat across the tank.
No. It runs quietly without disturbing your fish.
Yes. The corrosion-resistant materials make it suitable for saltwater aquariums.
Use the built-in controls and digital display to check and set your target temperature.
Just check it now and then for mineral buildup and wipe it clean if needed.
No. Always submerge the heater before plugging it in.
This model is best for larger aquariums and ponds, not small tanks.
Yes. Some fish keepers use multiple heaters to help spread heat in very large systems.
