Hydor In-Line ETH External Heater

First and unique external heater for aquariums with the exclusive PTC (Positive Thermal Coefficient) technology. The self-limiting PTC heating element guarantees maximum safety against any risk of overheating. The exclusive technology and the high quality of the components guarantee a long lasting product. Suitable for canister filters and sump tanks.

• First and only external heater for aquariums
• Ideal for sump tanks and external filters
• Vertical position only
• High precision thanks to the electronic control of the set temperature with operation light
• You can set a temperature between 18° C and 34° C (65° F - 93° F)
• It guarantees maximum safety thanks to the self-protection system of the PTC film that avoids potential risks of overheating
• Equipped with a special hanging eyelet
• Easy to use
• Practical connection system to pipes and other aquarium components
• Compatible with the PRIME external filter

• 200 - 12 mm of 200 W, internal tube of 12 mm in diameter, recommended for aquariums with Δ up to 8 ° C from 100 to 200 litres, aquariums with Δ up to 10 ° C from 100 to 180 litres
• 200 - 16 mm of 200 W, internal tube of 16 mm in diameter, recommended for aquariums with Δ up to 8 ° C from 100 to 200 litres, aquariums with Δ up to 10 ° C from 100 to 180 litres
• 300 - 16 mm of 300 W, internal tube of 16 mm in diameter, recommended for aquariums with Δ up to 8 ° C from 200 to 300 litres, aquariums with Δ up to 10 ° C from 180 to 250 litres