🧰 Turtle Tools
Work it out from volume and parameters, not guesswork — calculators and reference tables
Calculators
Work out the key parameters you need and size your equipment properly.
Filter Flow Calculator
Work out the right filter flow for your tank volume, and pick the filter type that fits.
Heater Wattage Calculator
Work out the heater wattage your tank needs to hold temperature through winter.
Feeding Amount Calculator
Work out how much to feed per meal and how often, based on shell size.
Water Change Calculator
Work out how much water to change based on your nitrate reading.
Tank Volume Calculator
Work out the real water volume, minus the space taken by the basking platform and substrate.
Stocking Density Calculator
Work out how many turtles your tank can hold, and avoid overcrowding.
Reference
Look up turtle-keeping facts and water parameters fast.
Water Parameter Reference
Look up safe ranges and test methods for pH, ammonia, nitrite, nitrate and more.
Turtle Species Reference
Compare common aquatic turtles by size, temperament, water temperature and difficulty.
Wizards
Get walked through a complex task step by step.
Tank Setup Plan Generator
Get walked through setting up a new tank, with a full equipment list and a day-by-day plan.