Why adding expensive products of which one does not know what they contain when nature will remove as much ammonia as needed for free!?
I have had issues like ich breakout. No qt setup. What do you do?
You setup a sterile qt and cycle in 2 days with Fritz Turbostart 900 and transfer fish.
Maybe someone doesnt want empty brand new tank to look empty after spending thousands on new setup and want to add fish right away.
Just a few reasons for someone to use such products.