Use this calculation to compare aquaculture production, feeding, growth, water-quality, or hatchery measurements collected with the same definitions and units.

Salinity Increase Ppt (ppt)

Required number in ppt.

Water Volume Liters (L)

Required number in L.

The cited overview of Salinity supplies background for the terminology and domain context used by this tool.^[1]

Estimate added salt for a target ppt increase assuming water density near 1 kg/L; verify density and existing salinity. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Approximate Salt Kilograms (kg)

Returned number in kg.

• Species, life stage, temperature, salinity, system design, sampling method, and management practice can materially change aquaculture measurements and suitable operating ranges.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Complement the calculation with calibrated water-quality instruments, representative sampling, feed and mortality records, and species-specific guidance from qualified aquatic-health or production professionals.

• Hardness Adjustment

  Convert a desired hardness increase stated as mg/L CaCO3 to kilograms of CaCO3 equivalent. Actual product mass depends on its chemistry and purity.

• Stocking Density

  Calculate live biomass per cubic metre of stocked water; this does not prescribe a safe species-specific density.

• Aeration Requirement

  Find rated aerator oxygen transfer needed at a user-supplied field transfer efficiency; allow for other oxygen sinks separately.