FREE Delivery on UK Orders over £65 / ROI Orders over €80


Marina Aquarium Heaters

Marina Aquarium Heaters includes many practical features for easy use, safety and convenience, including an easy-to-access temperature set dial, on/off pilot light indicator, and a bumper guard for fish safety. Made of durable high-impact glass, it’s built to last under normal aquatic conditions.

6 products

  • Marina Submersible Pre-Set Heater 300W

    MARINA Marina Submersible Pre-Set Heater 300W

    Out of stock

    Marina Submersible Pre-Set Heater 300W Description The Marina Submersible Pre-Set Heater (300W) is a powerful and reliable solution for maintaining stable water temperatures in freshwater or saltwater aquariums up to 300 litres (80 US gallons). Designed with safety and convenience in mind, this heater is ideal for larger tanks and offers dependable performance with user-friendly features. Marina Submersible Pre-Set Heater 300W Key Features 300-watt submersible heater, perfect for large aquariums up to 300L (80 US gal) Suitable for both freshwater and saltwater aquariums Length: 27cm (10.6”) – compact enough to fit neatly into larger tanks Pre-set temperature range: 20°C to 28°C (68°F to 82°F) Easy-to-access temperature dial with clearly marked settings On/Off pilot light indicator lets you know when the heater is actively working Impact-resistant, high-durability glass construction for long-lasting use Protective bumper guard shields fish from direct contact with the heater Fully waterproof sealed design for safe submersion Includes mounting bracket with suction cups for secure and easy installation 1.8-metre power cord for flexible placement within your setup CSA approved, ensuring safe operation Whether you're running a large community tank or a tropical marine environment, the Marina 300W Submersible Heater ensures stable and consistent water temperatures, helping you create a safe and comfortable habitat for your aquatic life.

    Out of stock

    €39,95

  • Marina Submersible Pre-Set Heater 200W

    MARINA Marina Submersible Pre-Set Heater 200W

    Out of stock

    Marina Submersible Pre-Set Heater 200W Description The Marina Submersible Pre-Set Heater (200W) offers powerful and dependable heating for freshwater and saltwater aquariums up to 200 litres (55 US gallons). Designed for ease of use and durability, this heater helps maintain stable water temperatures, ensuring a healthy and comfortable aquatic environment for your fish. Marina Submersible Pre-Set Heater 200W Key Features 200-watt submersible heater, ideal for aquariums up to 200L (55 US gal) Compatible with both freshwater and saltwater tanks Length: 27cm (10.6”) – a compact and efficient design for medium to large aquariums Pre-set temperature range: 20°C to 28°C (68°F to 82°F) Easy-to-access temperature adjustment dial with clearly marked settings On/Off pilot light indicator confirms when the heater is actively working Durable, impact-resistant glass construction built to withstand aquatic conditions Protective bumper guard prevents fish from coming into direct contact with the heater Fully sealed, waterproof design for safe and reliable submersion Mounting bracket with suction cups included for secure and straightforward installation 1.8-metre power cord for flexible placement within your aquarium setup CSA approved, ensuring safety and performance standards Perfect for tropical aquariums and marine environments, the Marina 200W Submersible Heater delivers consistent, efficient heating, making it a smart choice for reliable aquarium temperature control.

    Out of stock

    €37,95

  • Last stock! Marina Submersible Pre-Set Mini Heater 25W

    MARINA Marina Submersible Pre-Set Mini Heater 25W

    2 in stock

    Marina Submersible Pre-Set Mini Heater 25W Description Compact yet powerful, the Marina Submersible Pre-Set Mini Heater (25W) is designed to provide reliable and consistent heating for freshwater or saltwater aquariums up to 20 litres (5.5 US gallons). Whether you’re a beginner or experienced aquarist, this heater offers ease of use, safety, and durability in a sleek, space-saving design. Marina Submersible Pre-Set Mini Heater 25W Key Features 25-watt submersible heater, suitable for aquariums up to 20L (5.5 US gal) Ideal for both freshwater and saltwater tanks Length: 15cm (6") – compact for smaller setups Easy-to-access temperature dial with easy-to-read settings Pre-set temperature range: 20°C to 28°C (68°F to 82°F) Pilot light indicator shows when the heater is active Bumper guard protects fish from direct contact with the heater Durable high-impact, impact-resistant glass construction Fully waterproof sealing for safe submersion Includes mounting bracket with suction cups for easy and secure installation 1.8-metre power cord for flexible placement CSA approved for safety and reliability Whether you're maintaining a nano tank or a small betta aquarium, the Marina Mini Heater delivers efficient, dependable heating in a user-friendly design built to last.

    2 in stock

    €34,95

  • Marina Submersible Pre-Set Heater 50W

    MARINA Marina Submersible Pre-Set Heater 50W

    Out of stock

    Marina Submersible Pre-Set Heater 50W Description The Marina Submersible Pre-Set Heater (50W) is a reliable and efficient heating solution for freshwater or saltwater aquariums up to 38 litres (10 US gallons). Designed for ease of use and safety, this compact heater features a range of convenient functions, making it ideal for both beginner and experienced aquarists. Marina Submersible Pre-Set Heater 50W Key Features 50-watt submersible heater, ideal for aquariums up to 38L (10 US gal) Suitable for both freshwater and saltwater setups Length: 22cm (8.5") – compact design fits easily in most tanks Pre-set temperature range: 20°C to 28°C (68°F to 82°F) Easy-to-access temperature set dial with clearly marked settings On/Off pilot light indicator to show when the heater is active Impact-resistant, high-durability glass for long-term reliability Bumper guard to protect fish from direct contact with the heater Waterproof sealing for safe and full submersion Mounting bracket with suction cups for quick, secure installation 1.8-metre power cord for flexible placement CSA approved for safety compliance Perfect for smaller aquarium setups, the Marina 50W Submersible Heater delivers consistent temperature control, helping to maintain a healthy and stable aquatic environment for your fish.

    Out of stock

    €35,95

  • Last stock! Marina Submersible Pre-Set Heater 150W

    MARINA Marina Submersible Pre-Set Heater 150W

    1 in stock

    Marina Submersible Pre-Set Heater 150W Description The Marina Submersible Pre-Set Heater (150W) is a reliable and efficient heating solution for freshwater or saltwater aquariums up to 150 litres (40 US gallons). With a durable design and user-friendly features, it helps ensure your aquatic environment remains stable and comfortable for your fish and plants. Marina Submersible Pre-Set Heater 150W Key Features 150-watt submersible heater, ideal for tanks up to 150L (40 US gal) Suitable for both freshwater and saltwater aquariums Length: 27cm (10.6”) – compact and easy to place within the tank Temperature range: 20°C to 28°C (68°F to 82°F) Easy-to-access temperature set dial with clear, readable settings On/Off pilot light indicator lets you know when the heater is functioning Impact-resistant glass construction, built for durability Protective bumper guard to keep fish safe from direct contact Waterproof sealed design for full submersion Mounting bracket with suction cups included for secure, easy installation 1.8-metre power cord for convenient positioning CSA approved, meeting safety and performance standards The Marina 150W Submersible Heater offers the perfect balance of performance, safety, and ease of use, making it a great choice for medium-sized aquariums.

    1 in stock

    €37,95

  • Marina Submersible Pre-Set Heater 100W

    MARINA Marina Submersible Pre-Set Heater 100W

    Out of stock

    Marina Submersible Pre-Set Heater 100W Description The Marina Submersible Pre-Set Heater (100W) is a compact and powerful heating solution for freshwater or saltwater aquariums up to 100 litres (30 US gallons). Designed with safety and ease of use in mind, it offers consistent performance to help maintain a stable and healthy environment for your aquatic pets. Marina Submersible Pre-Set Heater 100W Key Features 100-watt submersible heater suitable for aquariums up to 100L (30 US gal) Compatible with both freshwater and saltwater aquariums Length: 22cm (8.5”) – compact design ideal for medium-sized tanks Pre-set temperature range: 20°C to 28°C (68°F to 82°F) Easy-to-access temperature adjustment dial with clear settings On/Off pilot light indicator signals when the heater is active Impact-resistant glass construction for durability and safety Protective bumper guard to shield fish from direct contact Fully sealed and waterproof for safe submersion Includes mounting bracket with suction cups for easy, secure installation 1.8-metre power cord for flexible placement CSA approved, meeting trusted safety standards Whether you're managing a tropical setup or marine aquarium, the Marina 100W Submersible Heater delivers reliable and efficient heating, making it a dependable choice for maintaining optimal water temperatures.

    Out of stock

    €35,95

Recently viewed products

Happy Pets NI - Your Trusted Pet Shop in Omagh

Since 2010, Happy Pets NI has been Omagh's go-to pet shop for quality pet supplies and expert advice. We stock a wide range of products, including dog food, collars, leads, and more, all carefully selected by our team of passionate pet lovers and aquarists.

With years of hands-on experience in animal care and fish keeping, our staff provide tailored guidance to meet your pet’s needs.

  • Based in Omagh, Northern Ireland
  • Established For Over 10 Years
  • Experts in Pet Supplies, Trusted by Pet Owners across the UK & Ireland

Login

Forgot your password?

Don't have an account yet?
Create account