Don't get me wrong I am well aware of the Nitrogen Cycle. When I was a kid I dropped in a shrimp and did the cycle the old fashioned way. Since returning to the hobby I have cycled tanks using bacteria like Bio Spira or Dr. Tim's and in most cases get a 0 ammonia reading, 0 nitrite, and a reading for nitrate within a week and a half. Dr. Tim's has always given me a measurable nitrite reading within 2-3 days so this was abnormal in my experience. I haven't cycled a tank without nitrifying bacteria being added in quite some time so I was just curious.
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