Dakotahshy
Aquarium Advice Apprentice
I still had about 3 large pieces of dead rock in my tank so I took them out, made sure no one was living in them and exchanged them for some more live rock. I also did a pwc at the same time. Now it appears my tank is cycling again. Is this normal. My Nitrites went up to .50 then the next day (today) they went down to .25. My nitrites have always been at .00. Hopefully tomorrow they will be back down, but would this cause this by adding new live rock?