i skipped a few post, but i saw 'sterility' in some of them. Sterility in an aquarium is IMPOSSIBLE. The bioburden load (bacteria population) can be very very low at a point we consider nitrification not existent, but it's not sterile. Sterile is a concept where no living thing are present, even a new tank with dry rock is not sterile.
I'm hitting a mental block with a few things that I need to work out.
Such as.... How does the bacteria in a bottle actually stay alive and ready to respond almost instantly after sitting on a shelf for a year.
Why does a mature tank undergo a much smaller "mini-cycle" than a young tank with identical bio loads. For instance, if you take 2 tanks with 5 identical fish with one being 2 years old and the other being 6 months old, wouldn't they have almost identical bacteria colonies? So why would the younger tank experience a much larger cycle than the older tank if 3 identical fish were added?
Still feel like I am missing something. Hope you don't mind if I pick your mind about these things later after I give it some thought.
Bacteria bottle:
i never looked at them, so i don'T have the right answer, but i would assume the would have filled X amount of bactria. when i say enought its millions, enought to have several log reduction and enought to support their claimed shelf life on the product. They can also use a media (solution) that slow the metabolism of the bacteria and keeps them stable. they probably also put complex sugar that are hard to 'digest' so it feeds the bacteria, but not enought that they grow, but prevents them to die to fast. i would be curious also what types of bacteria it is, it's probably different than what we find in our 'naturally cycled' tank.I might take a look next time i stop at my LFS.
Mini-cycle vs full cycle:
In mature tank, when facing a mini-cycle, it's the lag phase that is much smaller due to the higher number of bacteria in the mature system. In new tank, their is much less bacteria therefore the lag phase before nitrification process kicks in is much longer. That's why by adding bacteria in bottles you increase the initial amount of bacteria in the system, it accelerate the process or reduce the lag phase/cycle time.
It takes only a few weeks to cycle or to reach the minimal amount of bacteria needed to remove amonia for a new tank with few fishes, but as the system mature, we tend to increase fish stock, pods population increase, we overfeed, etc,etc. all factors contributing to the increase bacterial population (more nutrient available) in a mature system.
these are the parallel i can see with what i know, but i might be wrong. i'm new to reefing, but it's the same principles that apply in my opinion.