11 working planning tools

Measure twice. Stock once.

Every result shows its formula, units, assumptions and limitations. No calculator is presented as an animal-welfare guarantee.

What is this fish?

Upload a photograph for a cautious, confidence-labelled aquarium animal identification.

Estimate internal water volume from rectangular dimensions.

Estimate a bow-front tank using a transparent geometric approximation.

Plan floor and stand load from water, glass, substrate and hardscape.

Estimate heater power from volume and the room-to-water temperature rise.

Compare actual estimated flow with a chosen hourly turnover target.

Estimate substrate volume and mass from footprint and depth.

Convert a percentage water change into litres or US gallons.

Track ammonia, nitrite and nitrate milestones locally on this device.

Compare two inhabitants across water, size and behaviour.

Build a layered stocking idea and review transparent warnings.