you don't have to feed the ammonia either
once set, filtration bacteria do not downscale back to sterility without an action from the keeper, that's type from forums but that's not type from someone who has to keep hospital labs or bacteria labs clean and free of bacteria. Hydration will sustain what you've cycled, because ammonia still gets in the tank even if we don't account for it, here's one of fifty ways
-nonfiltration bacteria are rampant bloomers in any aquatic system where meds, temp extremes and drying isn't a factor. they bloom with hydration and nutrients, but die because they arent ocean bacteria long term habituated. generalized aerobic bacteria are their loose grouping, and thats only one of the divisions rated on their 02 usage/zoning
When huge communities of bacteria and gnats and skin cells degrade in the tank ____________ is produced (ammonia)
**when established by a cycle, the nitrifiers don't go back to sterile if a human withholds feed or ammonia from a liquid system, they remain in an overall steady state as contaminations (feed) still get in, always.
accurate microbiology applied to an aquarium must also consider the gross overages of active surface area we employ. Though its true removing bioloading alters the total bac counts, they are still so outpaced in our active tank surface areas (live rock chiefly) the bioregulation doesn't show up as free ammonia when a bioload is added back months later, equal or lesser than the one that came out
this means you do not have to ghost feed a fallow but established system, that's pumping waste into your tank for no good reason, because bacteria do not downscale back to sterility when a keeper withholds something from set bacteria while keeping hydration in place. the bacteria that ran the fish system are beyond whats needed considering rocks and sand, so when the fish are removed, the organics left in place sustain the bac, the myriad unaccounted for inputs, such that the fish can be put back in 4 mos later with no cycle.
Or
we are able to remove sandbeds instantly and go bare bottom and the rocks simply take over the loading, without any ramp up, as further demonstration of massive overdone surface areas in the reef tank.