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post #23 of (permalink) Old 10-10-2012, 12:15 AM
Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Posts: 11,721
Do water changes to keep the nitrites under 5 ppm.

When you feed too much ammonia the first population of bacteria turn it into too much nitrite faster than the second population can get rid of it. That is why you aim for 3 ppm max on the ammonia. That much generally will not make the nitrite spike too high.
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