I am no expert, so by no means take my advice for gold, but from what I gather about cycling, running an empty tank without an ammonia source will do nothing to cultivate a bacteria colony. It certainly will not harm anything, but running an empty tank for a week will just delay the beginning of the cycling stage.
As for the "stress" reducers in water conditioners, there is heated debate currently whether this does any good or not, check out the recent posts regarding this in the forum.
I have never kept danios, but I understand that they are a schooling fish. Getting only two might stress them a little bit, but getting more would not be good for cycling, so I suggest a different fish to begin with. Two platies might work, but be warned that livebearers breed like rabbits. This is not a huge problem, but you might have a little trouble explaining to your boys that the fry have disappeared because the parents ate them (and if they do manage to survive, your tank will be quickly overrun with them).
If you are considering a betta (sorry, I'm partial to them), this would make an excellent fish to cycle with. So would some white cloud mt. minnows (I think) but they do better with cooler temperatures and it sounds like you want a tropical tank.
Of course I am not too experienced, maybe the Elder Gods of the forum want to make some other suggestions? They never steer me wrong.
As for the "stress" reducers in water conditioners, there is heated debate currently whether this does any good or not, check out the recent posts regarding this in the forum.
I have never kept danios, but I understand that they are a schooling fish. Getting only two might stress them a little bit, but getting more would not be good for cycling, so I suggest a different fish to begin with. Two platies might work, but be warned that livebearers breed like rabbits. This is not a huge problem, but you might have a little trouble explaining to your boys that the fry have disappeared because the parents ate them (and if they do manage to survive, your tank will be quickly overrun with them).
If you are considering a betta (sorry, I'm partial to them), this would make an excellent fish to cycle with. So would some white cloud mt. minnows (I think) but they do better with cooler temperatures and it sounds like you want a tropical tank.
Of course I am not too experienced, maybe the Elder Gods of the forum want to make some other suggestions? They never steer me wrong.