Ammoina- You want 0ppm= its bad
Nitrites- You want oppm=its bad
Nitrates- You want them under ~20ppm=Good in small amounts
I think he ment if you see ammoina OR nitrites do a water change.
Now thoes goldfish will be too big for a 20g tank. I think you should return both or one to the strore. If you can return both you can add other fish to your tank.
Nitrites- You want oppm=its bad
Nitrates- You want them under ~20ppm=Good in small amounts
I think he ment if you see ammoina OR nitrites do a water change.
Now thoes goldfish will be too big for a 20g tank. I think you should return both or one to the strore. If you can return both you can add other fish to your tank.