Aquarium CO2 cylinder runtime calculator

Calculate estimated service days before reserve and nominal full service days with your own figures.

Your numbers

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

Use estimated service days before reserve and nominal full service days to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Usable gas mass (g)
2000
Observed gas consumption (g/day)
10
Reserve mass (g)
100
Estimated service days before reserve
190
Nominal full service days
200

Try another scenario

Usable gas mass (g)
2200
Observed gas consumption (g/day)
10
Reserve mass (g)
100
Estimated service days before reserve
210
Nominal full service days
220
Calculation method

Calculation method

Estimated service days before reserve

Days=(usable mass-reserve)/observed daily mass.

Nominal full service days

Days=(usable mass-reserve)/observed daily mass.

Symbols and units
a
Usable gas mass (g)
b
Observed gas consumption (g/day)
c
Reserve mass (g)

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

  • Measured consumption only; no bubble-count conversion or dosing recommendations. 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. Measured consumption only; no bubble-count conversion or dosing recommendations.
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