I never saw any ammonia, or nitrite, in the QT. The plants removed it as soon as the fish made it. I was a bit sceptical it would work with just the plants so I did test pretty often.
I don't have any ammonia in my tap water, that may make a difference if your water provider uses chloramine.
I don't have any ammonia in my tap water, that may make a difference if your water provider uses chloramine.