can I kill my bacteria

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johnkristie

Aquarium Advice Freak
Joined
Jan 24, 2004
Messages
215
Location
San Diego
I was just wondering. I'm cycling my tank right now and am in the phase of high NO2. Can the NO2 be so high that even the bacteria are killed off? My levels are so high that it's off the scale of my test kit.
 
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