API Marine Quick Start Water ConditionerAPI Marine Quick Start Water Conditioner nitrifying bacteria enables you to start your aquarium immediately, allowing for the instant addition of fish as it kick starts the natural aquarium cycle. API Marine quick start nitrifying bacteria reduces toxic ammonia and nitrite, helping to prevent fish loss, and is safe for reef aquariums. Product may be used after water or filter changes, when adding new elements to your aquarium, or after medicating your