LS Heater 25W – heater with thermostat for 10–20‑litre aquariums
Submersible 25 W aquarium heater with a built-in thermostat, designed for tanks of 10 to 20 litres. It runs…
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Find a productProduct description
This 25 W heater is for keepers of small freshwater or marine tanks in the 10–20 litre range. It uses a built-in thermostat to hold the set temperature, switching on when the water cools, so it addresses the need for stable heat in compact setups.
Why it matters
- The built-in thermostat switches the heater on when water temperature drops, keeping the set value without manual intervention.
- IPX8 rating, as stated by the supplier, means the unit is intended to operate fully submerged, which is the normal way it is used.
- The large temperature knob and the temperature indicator make the set point easy to read and adjust.
- A power indicator LED shows when the heater is working, and the package includes suction cups and holders for mounting.
Specifications
- Power: 25 W
- Supply voltage: 230 V, power cable 100 cm
- Operating range: 18 °C to 34 °C
- Recommended tank volume: 10 L to 20 L
- Minimum water level: 15 cm
- Overall dimensions including knob: 21.5 cm × 3 cm
- Weight: 0.2 kg
What it works with
The heater is matched to 10–20 litre tanks, and the 15 cm minimum water level sets the lower limit for where it can be installed. The manufacturer's series scales by wattage, with 50 W for 40–50 L and higher models for larger volumes, so this 25 W unit fits only the smallest tank class in that range.
Technical specification
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Frequently asked questions
It is designed for aquariums from 10 to 20 liters. Heaters in the LS series are matched to tank volume by wattage, so this 25W model is the one for that size range.
The minimum water level for safe operation is 15 cm. Keep the heater below that level so it does not run in too little water.
According to the supplier, it can be used in both freshwater and marine aquariums. The working temperature range is 18°C to 34°C.
Yes. It has an IPX8 waterproof rating and is meant to work submerged. The thermostat has a clear, easy-to-reach indicator and a large adjustment knob.
It comes with suction cups and holders for mounting. Overall dimensions including the knob are 21.5 cm x 3 cm, and the 230V power cable is 100 cm long.
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