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- Jul 1, 2015
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I recently upgraded from a 16 to a 65. I used all new water and added about 20 lbs of new dry rock. From the 16, I took about 10 lbs of LR and some seachem matrix in a bag. I added fish right away in the hope that there won't be a cycle. The question is, how long would it take for ammonia to show up if it will cycle? I've had it running since Thursday and so far no ammonia or nitrites.


