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Message: <blockquote data-quote="KrisReef" data-source="post: 10562260" data-attributes="member: 101424"><p>I’m going to guess that you are using API test kits? These are infamous for giving high ammonia readings after the cycle is completed.</p><p>The nitrates you measured were  results from the ammonia you added. They result from your cycle  bacteria eating ammonia and spitting out nitrite which is also eaten and released into the water as nitrate. All this indicates that your cycle is completed.</p><p></p><p>You can continue to add ammonia to test the efficacy of the biological filter as long as you need to feel certain that they are present and working.</p><p></p><p>When you are done with that I would recommend that you perform a large water change to remove the ammonia that was biologically processed into nitrate. The livestock in the tank generally like lower nitrates in their environment.</p></blockquote><p></p>

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