pola Posted June 12, 2009 Share Posted June 12, 2009 My tank is about a month new. Started with black gravels, and noticed NO2 was always high. Removed gravels and started daily water changes, NO2 still high. Just added sand base (normal Sand) to the tank, and today NO2 is all gone. Can anyone explain this? Link to comment Share on other sites More sharing options...
akroyd Posted June 12, 2009 Share Posted June 12, 2009 Just coincidence. It would have dropped at the same time regardless of the gravel. Link to comment Share on other sites More sharing options...
mcloughlin2 Posted June 12, 2009 Share Posted June 12, 2009 Just coincidence. It would have dropped at the same time regardless of the gravel. I agree. Link to comment Share on other sites More sharing options...
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