Calculate your tank water volume and estimate safe bioload stocking levels based on fish size guidelines.
Step 1: Define Tank Size
Step 2: Add Your Fish Selection
Your stocking list is empty. Add fish above to calculate.
Stocking Calculations
Calculated Volume20 gallons
Metric Equivalent75.7 L
Recommended Stocking Level (0%)
Current: 0.0″Max Guideline: 20″
Note: The 1 inch per gallon rule is a general, simplified baseline guideline. True bio-load also depends heavily on fish shape, activity, waste output, and filtration levels.
Filtration Requirements
We recommend a filter throughput rate of 100 – 200 GPH (Gallons Per Hour) to handle the bioload of a 20G tank correctly.