Cycled or commissioned
Bounded definition
A system has demonstrated processing of a defined nitrogen challenge under stated conditions.
Do not infer more: Tank age, nitrate, bottled bacteria or clear water alone do not establish capacity.
Wording people may use
cycled tank, commissioned tank, nitrogen cycle, tank cycled.
Use the term in context
Continue with commissioning guide, nitrogen-label guide. The glossary standardizes wording; the linked guide carries the practical method, evidence and decision boundary.
Editorial definition reviewed 2026-08-12. It adds no diagnosis, universal care target or new biological evidence. Challenge this wording or provide a source.