Marina Submersible Aquarium Heater – Mini 50 W – 15 cm (6 in)
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’s built to last under normal aquatic conditions.
Specifications
| Feature | Detail |
|---|---|
| Heating Power | 50 W |
| Heater Type | Submersible |
| Heating Capacity | Up to 38 litres (10 US gal) |
| Material | High-impact glass |
| Temperature Control | Adjustable dial |
| Indicator Light | On/off pilot light |
| Bumper Guard | Yes |
FAQ
What is the maximum aquarium size this heater can handle?
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 for precise control.
Is the heater safe for fish?
Yes, the heater features a bumper guard to prevent fish from coming into contact with the heating element.

Ruth Hamilton –
The heater works steadily and keeps my 20-litre tank at a consistent temperature. The dial is easy to adjust and the on/off light is very helpful when checking if it’s on. The glass body feels sturdy and the bumper guard keeps my fish safe.
Dylan Peters –
I’ve used this heater for three months now and it’s been reliable. It heats up quickly and maintains temperature well. The only thing is the dial can be a bit hard to turn when the tank is full of water.
Andrew Parr –
Great for a small tank. It’s compact and fits perfectly in my 30-litre freshwater setup. The temperature control is accurate and the pilot light helps me know when it’s active.