It's not that most people fully stock their tank at once...that's just the worst case scenario I'm trying to avoid for you. What you see happen a lot of times (with lots of different products, not just Stability) is that everything looks perfect, the tank cycles in record time, you add fish, your parameters look rock solid, then one day (weeks or even a couple months later) you test the water and see toxins, and basically it's like you have an uncycled tank. People end up having to do water changes constantly and basically doing a fish-in cycle until everything stabilizes out. How heavily the tank is stocked basically decides how long that takes.
It happened to a really good friend of mine on this site (he can tell you all about it). He did a fishless cycle with a bacteria booster like Stability, everything was perfect. Then one day about a month and a half later he woke up to a few dead Danios. When he broke out his test kit he had ammonia and nitrIte levels like the tank had never been cycled. He ended up doing water changes every day until I sent him a bunch of my established media which knocked it out for him and stabilized the tank.
In your other thread (I really, really don't want to get in depth and argue about this again)...but one of the links a supporter of Stability provided (the patent sheet) basically said clear as day that Stability doesn't establish your bio-filter...what it does is keep toxins down while your bio-filter establishes itself, on it's own, separately. That perfectly explains why a tank can appear cycled, only to crash on you once the Stability stops being added, or the "substitute" bacteria changes roles or begins dying off.
. I appreciate it though and I will take your advice in not fully stocking right when the tank appears to be cycled
