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

Daily Feed Kilograms (kg/day)

Required number in kg/day.

TAN Grams Per Kg Feed (g TAN/kg feed)

Required number in g TAN/kg feed.

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

Estimate total-ammonia-nitrogen loading from daily feed and an explicitly supplied feed-to-TAN factor. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

TAN Production Kg Per Day (kg TAN/day)

Returned number in kg TAN/day.

• 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.

• Ammonia Excretion

  Estimate daily total-ammonia-nitrogen excretion from biomass and an externally determined excretion rate.

• Alkalinity Requirement

  Estimate alkalinity equivalent consumed by nitrification using an explicitly entered CaCO3-per-N factor.

• Feed Allowance

  Calculate total feed allowance over a fixed number of days at an unchanged daily ration.