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43 Posts
Hello all! Here I am again with another rookie question. I have a currently cycling tank and my nitrites won't go down. I test daily. Ammonia has been at zero for a while now, but nitrites have been at 2 ppm for, oh, I would say 5 days now. Nitrates are at 5-10 ppm and holding. How long does it normally take for nitrites to start going down? Thanks! 