NO2 change what does it mean?

Agility4fun · 03-19-2013, 03:54 PM

I tested my tank water before and after a 50% water change.

Before level was 0 and after was slightly less that .25. What gives?

Ammonia was 0 before and after.

Bombalurina · 03-19-2013, 05:43 PM

Do you use Prime? That can give a false positive on ammonia for 24-48 hours after a change. :)

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