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What levels of ammonia and nitrite are safe in a cycled aquarium?

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  1. 50 parts per million
  2. 10 parts per million
  3. Zero parts per million

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References

  1. UF/IFAS Extension FA031: Ammonia in Aquatic Systems edis.ifas.ufl.edu/publication/FA031 Checked 2026-10-11.
  2. UF/IFAS Extension FA031: Ammonia in Aquatic Systems edis.ifas.ufl.edu/publication/FA031 Checked 2026-10-11.

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