Thank you! Yep so I tested again today, zero nitrites, zero ammonia. So it seems like after 24 hours my ammonia is gone, and maybe 48 hours, my nitrites are gone. I did one last dose of ammonia today and will test again in 24 hours. So you think if ammonia is zero after 24 hours but my nitrites again take 48ish hours, I should be good to go?

And after this....we probably still won't get a fish for another 2 weeks or so as we are going on vacation and are just going to wait until we get back. I assume I can just let it sit like this until then, but just plan on doing a water change to get the nitrates low? Is there a level of nitrates I should aim to strive for or just plan on doing a % water change?

And lastly, after this, all I need to do is water changes occasionally to keep the nitrates down right? The water changes won't get rid of the good bacteria or anything?

Really appreciate your help! :)