Temporal and spatial stability of ammonia-oxidizing archaea and bacteria in aquarium biofilters.

PLoS One · 2014 · PMC4257543 · PMID 25479061

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a decreasing trendno p-value reported

The range of nitrate concentrations varied from 9–89 mg NO 3 — N L −1 in aquaria F4-F6, with a decreasing trend over time due to the weekly water changes.

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