Marina Submersible Heater 8.5in 50W (15 gal.)
Experience dependable heating with the Marina Submersible Aquarium Heater, a robust 50-watt device ideal for both freshwater and marine tanks up to 38 liters (10 US gal). This heater is designed for user convenience and safety, featuring a straightforward temperature adjustment knob, a visible on/off indicator light, and a protective bumper for fish safety. Crafted from tough, impact-resistant glass, it ensures durability in typical aquatic environments.
Key Features
- 50-watt heater for fresh and saltwater tanks
- Dimensions: 22 cm (8.5 inches) in length
- Suitable for tanks up to 38 L (10 US gal)
- Simple temperature control dial
- Clear temperature markings for easy reading
- Indicator light for power status
| Specification | Detail |
|---|---|
| Heating Power | 50W |
| Compatible Tank Size | Up to 38 L (10 US gal) |
| Heater Type | Submersible |
| Material | Impact-resistant glass |
| Temperature Control | Adjustable dial with clear markings |
| Indicator Light | On/off status visible |
FAQ
What types of aquariums is this heater suitable for?
This heater is suitable for both freshwater and marine tanks up to 38 liters (10 US gal).
How do I adjust the temperature?
Use the simple temperature control dial to adjust the desired water temperature. The dial has clear markings for easy reading.
Is the heater safe for fish?
Yes, the heater includes a protective bumper that prevents direct contact with fish, ensuring their safety.

Alexander Mackay –
The heater works steadily and keeps my 10-gallon tank at a consistent temperature. The dial is easy to use and the indicator light helps me know when it’s on. My fish seem more active and healthy since I started using it.
Wendy Glover –
It’s reliable and fits well in my tank. The glass is sturdy and the temperature control is straightforward. I didn’t have any issues with overheating or malfunctions after a month of use.
Claire Welch –
I switched from a previous model and noticed a big improvement in temperature stability. The protective bumper is a nice touch—my fish haven’t touched it, and it’s been a smooth experience.