Neo-therm Submersible Aquarium Heater
The Neo-therm Submersible Aquarium Heater from Cobalt International is designed for marine, freshwater reef, and terrarium systems up to 40 gallons. Featuring a fully electronic, super flat design, it offers modern aesthetics and efficient performance.
Equipped with LED displays, the heater shows both the set temperature and the current tank temperature simultaneously, allowing for precise monitoring and control.
It includes built-in thermal protection circuitry to prevent overheating and ensure safe operation.
The one-touch setting system makes temperature adjustment simple and intuitive. The shatterproof outer casing provides added durability and safety.
Specifications
| Feature | Detail |
|---|---|
| Heating Capacity | Up to 40 gallon tanks |
| Display Type | LED (shows set and current temperature) |
| Thermal Protection | Yes |
| Control System | One-touch setting |
| Casing Material | Shatterproof |
FAQ
Can this heater be used in both marine and freshwater tanks?
Yes, the Neo-therm Submersible Aquarium Heater is suitable for both marine and freshwater reef and terrarium systems.
Does the heater have an automatic shut-off feature?
Yes, it includes thermal protection circuitry to automatically shut off if the water temperature exceeds safe levels.
Is the heater easy to install and adjust?
Yes, the one-touch setting system allows for quick and easy temperature adjustment without the need for tools or complex setup.

Caroline Wallace –
I’ve used this heater in my 30-gallon reef tank for six months. The LED display is very helpful for monitoring water temperature. It stays stable and never overheats. The flat design fits well in my tank without taking up much space. Very reliable and easy to use.
Elizabeth Davies –
The heater works well in my freshwater terrarium. The temperature control is accurate and the display shows both set and actual temps clearly. I appreciate the shatterproof casing—has been a good addition to my setup.
Audrey Oliver –
Installed it in my 40-gallon marine tank last month. The one-touch setting made adjusting temperature a breeze. No issues with overheating, and the LED screen is easy to read in low light. Solid build quality.