Well if this cycle started 5 days ago, then we can deduce this (I feel like a detective
):
SOME ammonia was converted to nitrite, because without that there would be no nitrite or nitrate.
LOTS of nitrite was converted into nitrate, because there is lots of nitrate, and if it gets that high in 5 days, it must have a huge supply of "food", as in nitrite.
IF it has that "food", nitrite, then there must be ammonia, making that food.
So somehow there is some amount of ammonia going into your tank, and some of it is being converted, otherwise how would there be nitrates in there.
That deduction is correct unless:
The tank already had nitrates in it, somehow.
The bb in a bottle had ammo, nitrite, or nitrate in it.
You added something else (fertilizer, ph up/down, etc.) to the tank.
Do any of those ^^^ apply to you?