Aquarium filter turnover adjustment calculator

Calculate nominal turnover rate and nominal turnover time with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use nominal turnover rate and nominal turnover time to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Measured outlet flow (L/hour)
600
Actual water volume (L)
180
Nominal turnover rate (per hour)
3.333333
Nominal turnover time (minutes)
18

Try another scenario

Measured outlet flow (L/hour)
660
Actual water volume (L)
180
Nominal turnover rate (per hour)
3.666667
Nominal turnover time (minutes)
16.363636
Calculation method

Calculation method

Nominal turnover rate (per hour)

Rate=measured flow/volume; time=60 volume/flow.

Nominal turnover time (minutes)

Rate=measured flow/volume; time=60 volume/flow.

Symbols and units
a
Measured outlet flow (L/hour)
b
Actual water volume (L)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Hydraulic arithmetic does not imply mixing, filtration or livestock suitability. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Hydraulic arithmetic does not imply mixing, filtration or livestock suitability.
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