The Superfish Pro Heater 100W is a fully submersible aquarium heater designed for tanks between 20 and 60 litres. It features an adjustable thermostat, allowing you to set temperatures between 18–34°C, and is built from durable borosilicate glass for added safety and thermal resistance. Its compact design and included suction cups make it easy to install in both freshwater and marine setups.

Key Features:

• 100W power – suitable for aquariums from 20 to 60 litres
• Adjustable thermostat for precise temperature control (18–34°C)
• Borosilicate safety glass – resistant to thermal shock
• Fully submersible and easy to mount using suction brackets
• Suitable for both freshwater and marine environments

Reliable and easy to use, the Superfish Pro Heater 100W is ideal for small to medium aquariums where stable temperature control is essential for fish and plant health. Its sturdy design and user-friendly features make it a dependable choice for hobbyists and beginners alike.

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.