Agree with C101 and Andy, this is a simple case of not understanding cycling, not understanding gravel cleaning and not understanding the Fish-In Cycling goals, written up in our article in the Beginners Resource Center.
t1tanrush, it doesn't matter at all to the heterotrophic bacteria whether their organic material is still in the form of food or has gone through the fish intestines, there's still plenty there for them to process into ammonia and they'll be doing it all the time. Its not something you see on a visual scale. Meanwhile an even greater amount is coming directly off the fish gills as they respire. With plenty of excess ammonia building up daily, they'll be sustaining permanent gill damage are are likely moving somewhere between those stages of permanent damage and death. As the autotrophic bacteria that process ammonia, Nitrosomonas, begin to slowly reproduce in the filter, they'll begin processing some of that ammonia into nitrite(NO2), which will begin causing permanent nerve damage, as there won't be nearly enough Nitrospira yet to handle the nitrite. Only good gravel-cleaning technique can begin to counter this. You don't have a filter yet.
Seachem Prime is probably the best conditioner out there, not only at clearing the chlorine/chloramines which are bad for both bacteria and fish but also neutralizing the ammonia into ammonium. The problem is that that is short-lived, intended only for the hour or so after a water change. Using it repeatedly would only work against what you're trying to accomplish, the growing of a filter. The main chemical of conditioners is an inhibitor of good growth of the bacteria if its present too much.
The members who are advising are just trying to "cut to the chase" of what works, as we get many cases of this each week and have watched them over and over. If you haven't had the info to put in the two months to get the filter working correctly prior to fish and have put more than a relatively tiny stocking of fish into a tank with no biofilter then it always comes down to two stark choices, re-homing the fish somehow or performing the labor of massive water changing, sometimes on a daily basis, to try and save the fish, even though they may live shortened lives.
The Fish-In Cycling article encapsulates the needed actions. The goal is to use a good liquid-reagent based test kit to do ongoing detective work figuring out the percentage and frequency of water changes needed in your particular tank/fish combination that will keep both ammonia and nitrite(NO2) from rising above 0.25ppm before you can be back at the house and test and perform another water change if necessary. Sometimes in cases of large individual fish, if you can work out a deal where the LFS or a friend can take one or two of the largest ones for the duration, then the needed water changing pattern will become much more manageable. Also, sometimes its found that a series of large gravel-clean-water-changes (you want to wait at least an hour between each massive change) will make conditions good and then maintaining that will be surprisingly easier. The time period for growing the two species of bacteria to form the working biofilter is nearly always around a month.
For the gravel-clean-water-changes you will want to use good technique. Dose the Prime at 1.5x recommended but not more than 2x and roughly temperature match using your hand, since the water changes will be as large as you can make them, still having room for the fish and plants above the gravel. Certainly a hose-technique is in order rather than buckets if the tank has any size. Good luck and we'll all be root'in for you and hoping the fish make it!
~~waterdrop~~