For god sakes please change the water. Yes, the elevated ammonia levels will create more "food" for the bacteria... but it will also kill the fish. I know, they are feeders... still fish. I'm not trying to sound mean, but there are a lot of people surfing around under the impression that only expensive fish are worth taking good care of. Danios are a popular choice for cycling because they tolerate ammonia burn on their gills well, but most people who do this wouldn't like having mustard gas shot down their throat.
As long as your are cycling, use just a little more patience and don't kill some fish.