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Fluval U3 Underwater Filter
Model: U3 · US configuration
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A larger internal U-Series model with a 24–40 US gallon manual interval and more pump output than U2, but a longer body than the U2.
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Explore this buying guide ↗Why consider this model?
- Assess U3 for a 24–40-gallon internal-filter plan when its 10.5-inch body and 6-W US rating suit the aquarium and access.
Tradeoffs to weigh
- Pump output is not an installed flow measurement; one product-page feature bullet has an inconsistent litre value that should not be mistaken for the model-table value.
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