Aquarium Volume Calculator
Estimate your real water volume for dosing and equipment sizing.
Aquarium Show
Use inside glass dimensions in inches (water level, not rim height).
Use actual water volume in the sump, not total tank size.
How much of the display volume is taken up by rock, sand, etc.
Use less than 100% to dose conservatively (many reefers use 80–90%).
Estimated water volume
Use this volume in your dosing calculator.
Display tank (raw)
0.0 gal
(0.0 L)
After rock & sand
0.0 gal
(0.0 L)
Total system volume
0.0 gal
(0.0 L)
Conservative dosing volume
0.0 gal
(0.0 L)
Tip: Start with the conservative dosing volume for new tanks or new additives. Adjust over time based on test results.