Aquarium tool
Cycling helper
Find out where your tank is in the nitrogen cycle.
What it tells you
A new tank has no beneficial bacteria. Ammonia rises first, then nitrite, then nitrate, and only when ammonia and nitrite both read zero is the tank cycled. The helper turns your readings into the next steps.
Limits
Test kits vary, and timings vary with temperature and the bacteria you start with. Treat the advice as a guide, and be cautious with fish in the tank.
More tools
Tank compatibility checker
Plan your stock before adding it to your aquarium.
Aquarium volume calculator
Work out how much water your tank really holds, and what it will weigh when full.
Fish finder
Find the species that suit your tank size and water.
Water change and dosing calculator
Plan a water change and scale a treatment dose to your tank.
Heater and filter calculator
Size a heater and a filter for your tank.