Marina Submersible Mini Glass Heater 50 Watt
Small yet powerful, the mini 50-watt Marina Submersible Aquarium Heater provides reliable heating for fresh or saltwater aquariums up to 38 litres (10 US gal) aquariums.
The heater includes many practical features for easy use, safety and convenience, including an easy-to-access temperature set dial, on/off pilot light indicator, and a bumper guard for fish safety. Made of durable high-impact glass, it is built to last under normal aquatic conditions.
Key Features
- 50-watt submersible heater for fresh or saltwater aquariums
- Length: 15 cm (6 in)
- For 38 L (10 US gal) aquariums
- Easy-to-access temperature set dial
- Easy-to-read temperature settings
- On/Off pilot light indicator
| Specification | Detail |
|---|---|
| Heating Power | 50 watts |
| Water Type | Freshwater or saltwater |
| Capacity | Up to 38 litres (10 US gal) |
| Heater Length | 15 cm (6 in) |
| Material | High-impact glass |
| Safety Feature | Bumper guard for fish safety |
FAQ
What is the maximum aquarium size this heater is suitable for?
This heater is suitable for aquariums up to 38 litres (10 US gal).
Does the heater come with a temperature control dial?
Yes, it includes an easy-to-access temperature set dial with clear temperature settings.
Is the heater safe for fish?
Yes, it has a bumper guard to prevent fish from touching the heating element.

Claire Welch –
The heater works steadily and keeps my 30-litre tank at a consistent temperature. The glass is sturdy and the dial is easy to adjust. My fish seem more active since I started using it.
Connor Springer –
It heats up quickly and maintains temperature well. The pilot light helps me know when it’s on. I appreciate the bumper guard—it keeps my small fish safe.
Eric Gill –
Perfect for a small tank. I’ve used it for both freshwater and saltwater, and it performs reliably. The design is simple and the glass feels solid.
Neil Turner –
It’s compact and fits well in my tank. The temperature dial is intuitive and the on/off light is helpful. No issues so far with overheating or malfunction.