Steel Heater 300W – steel heater with thermostat for 200-300‑litre aquariums
Stainless steel 300W aquarium heater with a built-in thermostat, for freshwater tanks of 200–300 L. It holds…
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This heater is for keepers of freshwater tanks between 200 and 300 litres who need a stable water temperature without constant manual adjustment. The built-in thermostat holds the water at the temperature you set, and the stainless steel housing handles both submersion and mechanical knocks.
Why it matters
- The stainless steel body resists mechanical damage and burnout, so it stays in use under regular handling and around the tank.
- The heater can run horizontally or vertically. In the horizontal position it needs at least 3 cm of water; in the vertical position, at least 27 cm.
- IPX8 water resistance means it is designed to operate fully submerged.
- A readable temperature programmer display shows the setting, and suction cups with holders are included for mounting.
Specifications
- Power: 300 W
- Supply voltage: 230 V, with a 100 cm power cable included
- Operating range: 12°C to 34°C
- Recommended tank volume: 200 L to 300 L
- Minimum water level: 3 cm (horizontal), 27 cm (vertical)
- Overall dimensions including knob: 35 cm x 3 cm
- Water resistance: IPX8
- Weight: 0.3 kg
What it works with
The heater is intended for freshwater aquaria in the 200–300 L range; the manufacturer does not recommend it for marine tanks. Its 300 W output matches this volume class, and its 3 cm minimum water level allows horizontal placement in shallower setups.
Technical specification
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Frequently asked questions
It is designed for aquariums from 200 to 300 litres. The manufacturer's table matches the 300W model to this volume range.
No, the manufacturer does not recommend it for marine aquariums. It is intended for freshwater tanks.
The minimum water level is 3 cm when the heater is placed horizontally and 27 cm when it is placed vertically. The stainless steel body can be used in any position and can be fully or partly submerged.
The thermostat keeps the water in the range from 12°C to 34°C and has a clear temperature display. The unit is rated IPX8, so it is designed to work fully underwater.
The power cable is 100 cm long and the unit runs on 230V mains. The set includes suction cups with holders for mounting.
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