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OASE HeatUp 400 US Aquarium Heater

Model: HeatUp 400 US · US configuration

OASE HeatUp 400 US aquarium heater in the manufacturer family-card image
Official OASE selector image linked to HeatUp 400 US (SKU 77117); model attribution comes from its card, not a legible wattage mark.

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A 400 W adjustable quartz-glass aquarium heater with a 66–90°F scale and 105.7 US gal conservative maximum; OASE also lists 400 L and markets up to 106 US gal.

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Why consider this model?

  • The 400 W HeatUp 400 is the longest of the seven US selector entries: 440 mm / about 17.3 inches. OASE’s technical maximum is 400 L, while the US-facing page says up to 106 US gal. The litre capacity converts to about 105.7 gallons, the conservative ceiling used here. The manufacturer lists BioMaster 850 as the external filter integration option.

Tradeoffs to weigh

  • A tank between the 400 L conversion (about 105.7 US gal) and the rounded 106 gallon marketing ceiling is outside this conservative match. The exact table states 115 V / 50–60 Hz, while narrative copy on OASE’s US pages conflicts with 230 V; check the actual label. The 440 mm body requires a long clear installation area. Quartz glass is not documented as shatterproof.
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