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Calcimator

Aquarium Water Change Calculator

Water change volume and frequency from bioload.

Inputs

Results

Immediate Change (%)

75

Immediate Change (gallons)

22.5

Weekly Maintenance (%)50
Weekly Change (gallons)15
Post-Change Nitrate (ppm)10
Schedule Intensity3
How to Use This Calculator
  1. Enter Tank Volume (gallons), Current Nitrate (ppm), and Target Nitrate (ppm).
  2. Set Weekly Nitrate Rise (ppm).
  3. Review Immediate Change (%) and Immediate Change (gallons).
  4. Use Weekly Maintenance (%) and Weekly Change (gallons) to inform your decision.
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