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OASE BioMaster 2 Thermo 850 External Filter with HeatUp 400

Model: BioMaster 2 Thermo 850 · US configuration

OASE BioMaster 2 Thermo 850 external filter, manufacturer product image; SKU 94677 attribution from exact page
Official OASE product image associated with BioMaster 2 Thermo 850 US (SKU 94677); the image itself does not distinguish the size or included heater.

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The US Thermo 850 is a distinct external-filter package with an included 400 W HeatUp heater, current US ceiling of 225 US gallons and 8 L total filter volume; the latter is not a basket-capacity figure.

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Why consider this model?

  • The largest observed BioMaster² Thermo external-filter assessment here when the included HeatUp 400 package is relevant and a suitable next-to-or-under location can be confirmed from the US instructions.

Tradeoffs to weigh

  • The current 225-gallon ceiling and same-number manual recommendation do not supply a lower endpoint or a high-waste rating. The page and manual disagree on L/h flow, slightly differ in the paired head-height conversion, and show different separated versus combined power fields.
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