The Nitrates are higher then the day before so you are getting Nitrites being converted into Nitrates, you can reduce them both with water changes or you can just leave it and see what happens. This is all standard when you are creating the nitrogen cycle in a tank.
19-3-18.jpg (51.14 KiB) Viewed 9063 times
Nitrite.jpg (91.09 KiB) Viewed 9063 times
think_1.gif (1021 Bytes) Viewed 9063 times
prodi bio start up.jpg (49.41 KiB) Viewed 9063 times