The Planted Tank Forum - View Single Post - Fishless Cycle Ammonia Questions
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Old 05-20-2013, 02:38 PM   #8
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Fishless cycling can typically take about a month (or longer). So there's plenty of biofilm.

Many fish - along with nearly all invertebrates - are so sensitive to ammonia and nitrite that it's not ideal to house them in a tank that has any trace of either. Which is why the fishless cycle is handy and humane.
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