01-25-2014, 10:26 AM
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What goes up, must come down! During a typical cycle, you'll see the ammonia 'spike' first. As the bacteria converts the ammonia, you'll see the nitrites spike up as the ammonia levels fall. In the final step of the process the nitrAtes will spike as the nitrIte level falls - until you *finally* get a reading of o,o,?
Looks to me like you're moving in the right direction!
Originally Posted by jay0884
Really?? I thought it was the opposite. I thought I read If ph goes down ammonia is converted into ammonium which isn't detected by ammonia test. But if ph rises ammonium is turned back into ammonia. I'm probably wrong but can someone clear that up??
My understanding is that if the pH falls too low, the bacterial colonies go dormant, and so the nitrogen cycle doesn't happen. Because of this, you would see the ammonia level rise in a previously cycled tank, as the bacteria is no longer consuming it. When the pH is this low, ammonia becomes ammonium, and as BB said, the API test kit does not differentiate between the two - so both ammonia and ammonium will give a positive test result.
Last edited by Chesh; 01-25-2014 at 10:29 AM..