I always experience amonia when setting up a qt with stability. I always follow the directions. Stuuf does not work very well.
For the future, place a sponge in your sump for a few weeks, that will seed the sponge, then move the sponge into the qt and now you have an instantly cycled QT. Just add an extra sponge in the sump so its always their when you need it. Just dont move it back to the sump from the qt. This can cause what ever disease exists in qt to move the the DT. So NEVER do this!
If it was me, I would hold off on the treatment and get the tank right first.