Most places would suggest prime is good for new tanks. As many places suggest the use of ammo lock in an emergency on a cycled system(to save lives)
I stick by my original point, biased against chemicals.
(Never used anything other than meds and occasionally carbon chips)
However, I have taken the time to read up on ammo lock (again), I still say while it is in use, you can't make an accurate test for nh3 at any point. In such conditions a specific nh3 kit is needed. It does change back after time agreed but there is no way of knowing the % of change while the chemical is in the water course. It is safe up to 10 times overdose (according to API independent test, university of Georgia, medical micro biology)
Now. To know precisely the volume of water and the precise dose of ammolock, that is not so easy in an uncontrolled environment. Medical grade measuring equipment very often isn't in every fish keepers arsenal.
I can't find any data on its fall off rate, I can't find anything about dissipation. Once added it's there until removed (carbon/water changes)
I know the rough volumes of my tanks, not the precise volumes, I think that's why a lot of meds etc. have an overdose acceptance calculated in.
As you disrupt the cycle you could get the nitrite spike again which is just as deadly, so you push the problem into next week, by its use the only thing you gain is time.
The best control for ammonia in my mind is extra effort and water changes. The problem is usually, too many fish, too much food, not enough filter capacity, not enough water changes, a dead fish.
Cycle through that list first, then consider the action needed to correct the imbalance.
99% of the time a water change or 10 will fix it. (This includes cleaning filters/substrate etc.)
For the basic water change, this will be up to 3 times a day to maintain things for maybe a month or until tests prove satisfactory.
(I use pond de-chlorinator inc. chloramines, heavy metals) it has no effect on ammonia in the tank except to disassociate chlorine from ammonia, this happens before water is added to tank with no recorded problems. (Yet)