Is this a fishy cycle? Just curious...
In order to cycle, there has to be ammonia. If ammonia=0 then there will be no formation of nitrifying bacteria, a.k.a cycling. Since everything is at 0 levels, it doesn't sound like anything is going on.
What are you using to test the water? You may want to take a little sample to the LFS and have them test it to verify all those zero readings. A bunch of decaying food (which I would remove, by the way) should be producing ammonia...
The fuzzies sound like moldy decaying food, and I would get rid of it asap. If this is a fishless cycle and you are using decaying food to form ammonia, I would still say that the undesirable presence of mold spores outweighs the benefits of ammonia production by decay. If they aren't too small, you might get them out with a net more efficiently than by doing a water change.
Hmmm.... Just thought of something... How much water did you change and how soon after that did you test the water?
Sorry to answer a question with a bunch of questions...