Oase BioMaster Thermo 250

The Oase BioMaster Thermo 250 integrates an inline heater directly into the BioMaster 250 canister filter, combining filtration and temperature regulation into a single, streamlined unit for aquariums up to 250 litres. This elegant solution removes the heater from the aquarium entirely, improving aesthetics and reducing the risk of heater failures caused by accidental low water levels. The unit draws a combined 36 watts (filter plus heater), and the inline heater provides precise, even temperature distribution as water returns to the tank. The pre-filter chamber, EasyConnect tap system, and multi-stage media organisation of the standard BioMaster 250 are fully retained. Ideal for aquascapers and hobbyists who value a minimalist, equipment-free tank appearance.