Experience precise aquarium heating with the Eheim Thermopreset Heaters, designed with electronic control for superior temperature accuracy. These heaters are preset to maintain a consistent 25 degrees Celsius, ensuring optimal conditions for your aquatic environment. The innovative design includes a highly efficient heating element for even heat distribution, and the additional plastic protection offers enhanced mechanical stability.

Each model is equipped with a LED indicator that signals the heating function's status, and includes a dry-running protection feature for safety. The slim profile, measuring just 2.8 cm in diameter, allows for discreet placement within both small and large tanks. With versatile suction cup mounting, the Thermopreset Heaters are suitable for freshwater and marine setups and come with a reassuring 3-year warranty.

• Electronic control for high temperature accuracy.
• Preset temperature setting at 25°C for convenience.
• Durable plastic protection ensures mechanical stability.
• Slim design ideal for small and large tanks.
• LED indicator for clear heating function visibility.

Perfect for hobbyists and professionals, the Eheim Thermopreset Heaters deliver reliable performance with safety features that include dry-run protection and a user-friendly operating experience. Each variant promises exceptional efficiency, contributing to the wellbeing of your aquarium inhabitants.

• Performance Classes: 50W, 100W, 150W, 200W
• Dimensions: Diameter 2.8 cm, Length 17 - 25 cm
• Suitable Tank Sizes:
• 50W: 25 - 60L
• 100W: 100 - 150L
• 150W: 200 - 300L
• 200W: 300 - 400L
• Water Type Compatibility: Freshwater and Marine
• Warranty: 3 years

Aquacadabra acts as credit broker/intermediary and not as a lender.

Klarna's credit products are provided by Klarna Bank AB, which is authorised and regulated by the Swedish Financial Services Authority, with limited supervision by the Financial Conduct Authority. More information can be found here.

Newpay finance options are provided through Deko’s platform by NewDay. P.D. Aquatics Ltd, t/a Aquacadabra is an Introducer Appointed Representative of Pay4Later Ltd, t/a Deko, which is authorised and regulated by the Financial Conduct Authority (ref no 728646) and is a credit broker, not a lender. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (ref no 690292) and is authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 for the provision of payment services (ref no 555318). More information can be found by clicking the newpay option above, or in the Newpay FAQs.

We really want you to be happy with the product that you've received. If however, when the goods arrive they're not what you want, then no problem - we have a 60 day no quibble return guarantee. Just let us know that you're going to return the item(s) by contacting us(stating your Order Number) and complete the returns packing slip that will have been included with your delivery. This will help us to quickly identify the item that you have returned (unopened and unused) - and we'll put a refund through for you.