Cycling Coach
Nitrogen cycle tool
Enter today’s readings for a clear snapshot.
Inputs
Results
⚪ Incomplete
Ammonia: — ppm • Nitrite: — ppm • Nitrate: — ppm • Method: Fishless • Planted: No
24-Hour Challenge
Shows your filter can process two ppm ammonia to zero ammonia and zero nitrite in twenty-four hours.Dose to ~2 ppm, wait 24 hours, then enter the readings below.
Advanced (optional)
Estimated toxic NH₃:
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⚠️ Caution
Test kits read TAN, which is NH3 plus NH4. Only NH3 is toxic and increases with pH and temperature.
Cycling Coach is an educational tool. Always confirm with your own testing and judgment before making aquarium decisions.
Cycling Coach is your aquarium cycling assistant. Enter your test results for ammonia (NH₃/NH₄⁺), nitrite (NO₂⁻), and nitrate (NO₃⁻) to see how your tank is progressing through the nitrogen cycle. Whether you’re doing a fishless cycle or cycling with fish, the tool helps you track water parameters, understand the next steps, and maintain a safe environment for your fish.