I have one tetra that is floating in the same spot near the gravel and twitching. I don't see any spots on him.
Ammonia and nitrites are 0; nitrates are 5.
Here he is:
All of the other fish (cardinal tetras only) are together in a school.
Ammonia and nitrites are 0; nitrates are 5.
Here he is:
All of the other fish (cardinal tetras only) are together in a school.