OASE HeatUp 300 Aquarium Heater – Reliable 300 W Heating for Freshwater Tanks
The OASE HeatUp 300 is a submersible aquarium heater designed for freshwater aquariums. It delivers 300 W of heating power with a compact 2.3 cm diameter, making it suitable for tanks where space and precise temperature control matter.
300 W heating power maintains stable water temperatures in freshwater aquariums
Compact 2.3 cm diameter fits most standard aquarium setups
Network-powered operation ensures continuous, reliable heating without battery dependency
The HeatUp 300 combines a low-profile design with consistent 300 W output, allowing it to blend into the aquarium environment while delivering dependable warmth. Its network-powered operation means no recharging or battery replacement is required.
Ideal für...
Freshwater aquarium owners who need a compact, reliable heater for tanks up to approximately 60–120 litres. Suitable for community tanks, planted aquariums, and breeding setups where stable temperature is essential for fish health and plant growth.
Anwendung von OASE HeatUp 300
Place the heater horizontally or vertically against the aquarium glass, ensuring the water level covers the heating element
Connect to a power outlet and set the desired temperature using the built-in thermostat
Allow 15–30 minutes for the heater to adjust before checking the water temperature
Clean the heater exterior regularly to prevent algae buildup on the glass surface
OASE is a German manufacturer specialising in aquarium equipment and water treatment products. The brand is known for heaters, filters, and lighting systems designed for freshwater and marine aquariums. OASE products are distributed across European markets and are recognised for functional, no-frills aquarium technology.
The OASE HeatUp 300 is a 300 W submersible aquarium heater for freshwater tanks. It maintains stable water temperatures and is designed for compact aquarium setups.
The 300 W output is suitable for freshwater aquariums up to approximately 60–120 litres, depending on room temperature and tank insulation.
300 W heating power, 2.3 cm diameter, network-powered operation, 36-month manufacturer warranty.
Place the heater against the aquarium glass, fully submerged, and connect to a power outlet. Set the desired temperature using the built-in thermostat.
The OASE HeatUp 300 comes with a 36-month manufacturer warranty, covering defects in materials and workmanship under normal use.
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