Free to use
Aquarium Tools
Quick answers for planning and running your tank, built on the care data in our species profiles.
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Tank compatibility checker
Plan your stock before adding it to your aquarium.
Check my stock -
Aquarium volume calculator
Work out how much water your tank really holds, and what it will weigh when full.
Work out my tank -
Fish finder
Find the species that suit your tank size and water.
Find species -
Water change and dosing calculator
Plan a water change and scale a treatment dose to your tank.
Work it out -
Heater and filter calculator
Size a heater and a filter for your tank.
Size my equipment -
Cycling helper
Find out where your tank is in the nitrogen cycle.
Check my tank