Filtration Flow Rate Calculator

Find the right filter flow rate for your aquarium. Ideally, your filter should turn over the full tank volume 4–6 times per hour.

Filter Flow Rate Calculator

Enter your tank size to calculate the recommended filtration flow rate.

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Not sure of your tank volume? Use our tank volume & water weight calculator .

Most freshwater tanks do well around 4–6× turnover. Higher for marine or messy fish like goldfish and cichlids.