Fluval P50 Submersible Aquarium Heater
Durable, shatter-resistant polymer build ensures safety for your tank and its occupants.
Fixed temperature setting eliminates the need for manual tweaking.
Completely waterproof and submersible, making placement within the aquarium effortless.
Features an LED indicator light to show when the heater is active.
Suitable for both freshwater and saltwater aquarium environments.
Technical Specifications
| Feature | Detail |
|---|---|
| Heating Capacity | 50 watts |
| Operating Temperature | 70°F to 82°F (21°C to 28°C) |
| Material | Shatter-resistant polymer |
| Waterproof Rating | Submersible, fully waterproof |
| Indicator Light | LED light for active status |
| Compatibility | Freshwater and saltwater aquariums |
FAQ
Can this heater be used in a saltwater aquarium?
Yes, the Fluval P50 is suitable for both freshwater and saltwater aquarium environments.
Does the heater have a temperature control feature?
No, it features a fixed temperature setting and does not allow manual adjustment of temperature.
Is the heater safe for fish and tank structure?
Yes, the shatter-resistant polymer build ensures safety for both the tank and its inhabitants.

Leah Short –
The heater works reliably and maintains a steady temperature in my 55-gallon tank. The LED light is helpful to know when it’s active. No issues with overheating or leaks. Works well in both freshwater and saltwater setups.
Joanne MacDonald –
Easy to install and stays stable in the tank. The fixed temperature setting is convenient. I didn’t need to adjust it during the week. The indicator light helps me monitor its status at a glance.
Sean Kerr –
Used in a marine tank with corals and fish. It maintains consistent water temperature without causing fluctuations. No signs of damage after several months of use. Very reliable.
Emily Brown –
Works as expected in a freshwater setup. The heater is compact and doesn’t take up much space. I appreciate the waterproof design and the simple operation.