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Calcimator

Water Quality Calculator

Assess aquaculture water quality by evaluating ammonia, nitrite, pH, dissolved oxygen, and temperature against safe thresholds for fish.

Inputs

ppm
ppm
ppm
°F

Results

Overall Status

Safe — All Parameters Normal

Ammonia StatusSafe
Un-ionized Ammonia (NH₃)0.01 ppm
Nitrite StatusSafe
pH StatusSafe
Dissolved Oxygen StatusSafe
DO Saturation73%
Temperature StatusSafe
Temperature (Celsius)172.54°F
How to Use This Calculator
  1. Enter Total Ammonia Nitrogen (TAN), Nitrite, and pH Level.
  2. Set Dissolved Oxygen and Water Temperature.
  3. Review the Overall Status result.
  4. Use Ammonia Status and Un-ionized Ammonia (NH₃) (ppm) to inform your decision.
  5. Use the chart to visualize the results and explore different scenarios by adjusting inputs.

What each input means

Total Ammonia Nitrogen (TAN)
Total ammonia nitrogen reading from your test kit in parts per million.
Nitrite
Nitrite level in ppm. Levels above 0.5 ppm stress most fish species.
pH Level
Water pH. Most aquaculture species thrive between 6.5 and 8.5.
Dissolved Oxygen
Dissolved oxygen level in ppm. Below 3 ppm is critical for most fish.
Water Temperature
Current water temperature in Fahrenheit. Affects ammonia toxicity and oxygen saturation.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total Ammonia Nitrogen (TAN) = 0.5, Nitrite = 0.2, pH Level = 7.5, Dissolved Oxygen = 6 = 5 input(s) provided
  2. Calculate Overall Status
    Safe — All Parameters Normal = Safe — All Parameters Normal
  3. Calculate Ammonia Status
    Safe = Safe
  4. Calculate Un-ionized Ammonia
    Un-ionized Ammonia
    0.009 = 0.009

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