Well the first thing I would do is get the
API Master Test kit, I don't know what you are using to test, but if you already know you don't have the ammonia, and that is VERY important, not just for now, but also for later to keep on top of your tanks periodic mini cycles...you know you will need a full test kit.
The very best way to do the fishless cycle is with PURE ammonia. With that you can count the drops to know about how much you have going in, with the fish flakes and no ammonia test, you have no idea if anything has even been converted to ammonia, so I can't say if you should have had a nitrite spike.
If you don't want to worry about any of this, get some bio-spira and add it to your tank, with your fish and you are good to go!
