SunSun EH-500 External Aquarium Canister Heater 500W

The SunSun EH-500 External Aquarium Canister Heater 500W is a powerful inline heater designed to maintain a stable water temperature without placing additional equipment inside the aquarium. Installed directly on the outlet hose of an external filter or water pump, it provides efficient heating while keeping the aquarium clean, uncluttered, and visually appealing.

Suitable for aquariums from 300 to 500 litres, the EH-500 features an adjustable thermostat with a temperature range of 20°C to 35°C, allowing precise temperature control in 0.5°C increments with an accuracy of ±0.5°C. The integrated LCD display continuously shows the current water temperature, while the heater operation indicator provides a clear visual indication when the heating element is active.

The heater is compatible with the most common filter hose sizes thanks to its three connection options for 12 mm, 16 mm, and 20 mm internal diameter hoses. For maximum safety, the EH-500 is equipped with overheating protection and automatically switches off if water flow stops, helping to protect both the heater and your aquarium.

Key Features

• External inline aquarium heater
• Power: 500W
• Recommended for aquariums 300–500 litres
• Adjustable temperature from 20°C to 35°C
• Temperature adjustment in 0.5°C increments
• Temperature accuracy: ±0.5°C
• LCD display showing the current water temperature
• Heater operation indicator
• Compatible with 12 mm, 16 mm and 20 mm internal diameter hoses
• Safety protection against overheating and no water flow
• Keeps the aquarium free from internal heaters

Technical Specifications

• Model: SunSun EH-500
• Type: External inline aquarium heater
• Power: 500W
• Recommended aquarium size: 300–500L
• Temperature range: 20°C – 35°C
• Temperature accuracy: ±0.5°C
• Adjustment interval: 0.5°C
• Hose compatibility: 12 mm, 16 mm, 20 mm (internal diameter)
• Display: LCD
• Safety features: Overheating protection and automatic shut-off when water flow stops