The Aquarium calculator performs the following calculations for different types of aquariums
• Water volume
• The weight of the soil substrate
• Total weight for freshwater, brackish, and salt water.
• CO2 concentration
• Unresolved ammonia
• Oxygen saturation
• Conversions for various units such as cm in inch and v.v., liters in gallons v.v, etc.

The Aquarium calculator is free, however, displays advertising. An ad-free version can be purchased.