Hi, I am the author of this article and I registered just to reply to this thread.
@Byron
Thank you for your comments. I have enormous respect for you, though I am more of a lurker rather than participant in online communities.
About the 14 days thing. First, let me just point out that I did in fact say in the article that you can change water if there's a spike.
Second, though I am experienced myself, I try to do extensive research before writing something (instead of simply following the status quo).
So Prime is likely neutralizing ammonia by temporarily changing it to ammonium. It also breaks down chloramine to chlorine and ammonia. The more chloramine you have in your tap water, the more release of ammonium you will experience. Chloramine contents obviously vary among water facilities and the aquarist should do their own research on their local authority.
Studies (
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC245802/) have suggested that ammonia-oxidizing bacteria feed on ammonia and not ammonium, or at least the oxidizing is greatly reduced when the substrate is ammonium. This leads to a slower establishment of the colony. In my understanding this is undesirable when you want to cycle a tank faster.
Since the effect of Prime is temporary the ammonium turns back into ammonium in about 24 hours.
This bumps up the ammonia content in the tank, and in my article I suggest doing a fish-in cycle.
Ok, before I continue I must make clear that Nitrosomonas is a genus of bacteria, which means there are different species of Nitrosomonas, and not just one.
Anyway, it is known that higher ammonia content stall the nitrogen cycle (
https://www.jstor.org/stable/25038971?seq=1). When I did more research I found other papers stating that in higher ammonia content the nitrosomonas "adjust" themselves and a species that can handle the high NH3 load establishes itself as the dominant one, outcompeting others.
After the spike subsides it takes time (days or even weeks) for the bacteria to adjust their dominant species again. This again slows down the cycle.
Often, during cycling an aquarium, the aquarist faces a sudden, unexpected spike. They rush to perform a water change using dechlorinates water etc.
Having to continuously dose Prime or Tetra SafeStart during cycling can be avoided by either using purified, remineralized water for water changes or having an already-dechlorinated batch of water laying around and ready to be used (I should, perhaps, add this to the article).
Hope this helps clarify my reasoning in the article!
P.S. - my intention never was to make things more complicated. I just try to explain them as detailed as possible, because I'm a firm believer that oversimplification is often the root of misunderstanding and misleading info. In my experience, oversimplification is one of the vices in this otherwise complicated hobby.
Regards,
Momchil