Nimo
Aquarium Advice FINatic
If you are showing any ammonia or nitrites water change should be done. If your nitrates are above 40 I would also recommend doing a water change.
This cycle shouldn't take as long as a new tank cycle because you had some BB in your tank from the first cycle. So you might get thru this rather quickly compared to a start up cycle.
This cycle shouldn't take as long as a new tank cycle because you had some BB in your tank from the first cycle. So you might get thru this rather quickly compared to a start up cycle.