Oase 300 Heatup Heater

The Oase HeatUp 300W is a premium, fully submersible aquarium heater designed for large aquariums, typically up to 300 liters (about 80 gallons) in volume.

It delivers powerful and precise temperature regulation for freshwater and saltwater setups, making it ideal for hobbyists who require consistent thermal conditions in larger tanks.

This heater features an adjustable thermostat with a temperature range of 18°C to 32°C (64°F to 90°F), allowing fine-tuned control to meet the needs of a wide range of aquatic species. An integrated indicator light shows when the unit is actively heating.

Constructed from shock-resistant quartz glass, the HeatUp 300W is built for durability and safety.

It includes suction cup mounts for secure placement within the tank and can also be installed directly inside compatible Oase filter systems such as the BioMaster 600 and FiltoSmart Thermo 300, offering a clean, space-saving integration.

The Oase HeatUp 300W also includes overheat protection and delivers stable, uniform heating, reducing the risk of temperature fluctuations that can stress or harm aquatic life. It comes with a 3-year manufacturer’s warranty, reflecting Oase’s commitment to reliability and performance.