Use TankStockPilot as a reproducible worksheet for aquarium planning. Start with the question the tool actually models, then keep its inputs and assumptions visible.
Follow the input sequence
- Measure inside dimensions and the intended water line in centimeters.
- Record substrate depth and a separate displacement estimate.
- Add each proposed species and count to the local planning list.
- Check adult dimensions, social needs and water requirements with species-specific sources.
Read the result in context
A 60 × 30 cm footprint with water at 35 cm has a 63 L rectangular envelope. A 5 cm substrate layer reduces the simple water space to 54 L; another 4 L of displacement gives a 50 L estimate. Substrate porosity and irregular decorations make actual water volume uncertain.
No fish-per-liter rule, compatibility score or stocking approval is generated. Volume alone cannot establish suitable space, group size, filtration or welfare for a species.
Keep your own record
Calculator numbers are not saved by the theme. Copy or print the record you need before closing the page. Reset restores the example, and a blank or invalid input produces an error message. The calculator requires JavaScript for live results; its written formula remains readable without it.
Continue to the calculator or the practical guide.