Hydor 300w In-Line Heater

Hydor 300W In-Line Heater

The Hydor 300W In-Line Heater is a high-performance external heater designed to keep your aquarium’s temperature stable without cluttering the inside of your tank. Installed directly onto the return line of your canister filter, it efficiently warms the water as it flows back into the aquarium, providing even heat distribution throughout the tank.

Ideal for freshwater and marine setups, the Hydor In-Line Heater is equipped with a precision electronic thermostat that maintains your desired temperature with accuracy. The 300W model is suitable for larger aquariums and is designed for use with 16/22mm (5/8") hose connections.

Key features:

• 300W – suitable for aquariums up to approx. 300 litres
• In-line design keeps the heater out of sight and out of the tank
• Easy integration with canister filter tubing (16/22mm)
• Accurate electronic thermostat with external temperature dial
• Maintains stable, even water temperature
• Suitable for both freshwater and marine aquariums
• Fully submersible construction for safety and reliability

The Hydor In-Line Heater 300W is a smart choice for aquarists who want efficient, discreet heating without sacrificing performance or space in their aquarium.