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Fish Tank Size Calculator

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Pro Tip

Filter capacity should cycle the total tank volume 4–6 times per hour. A 50L tank needs a filter rated for 200–300 L/hour.

Difficulty:Intermediate

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The mathematical principles behind fish tank size have practical applications across multiple industries and have been refined through decades of real-world use.

Mathematically verified
Reviewed May 2026
Used 23K+ times
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