What are the ideal temperature range and pH level for the optimal growth of nitrifying bacteria?

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30 to 35°C with a pH around 5.5Above 35°C and acidic conditions below pH 5Between 25 and 40°C with a pH from 8 to 8.5All the above conditions are suitableNone of the above

Explanation

Nitrifying bacteria thrive best in moderately warm temperatures ranging from 25 to 40°C and in slightly alkaline conditions where the pH is between 8 and 8.5. Conditions that are too acidic or excessively hot are not favorable for their activity.