I was using an undergravel filter and my normal filter on the top of the tank. After about 2 weeks of having fish in there, my nitrite levels spiked causing me to lose a few fish. It seemed like everything i tried did not bring the nitrite level down until i turned of the undergravel filter. Why is that?
I would think that having an upper and lower filter would make the water even better but i guess not. Anyone have any experiences like this?
Note - I am not running the undergravel filter anymore, just the top filter (whisper) and my levels seem to be normal.
I would think that having an upper and lower filter would make the water even better but i guess not. Anyone have any experiences like this?
Note - I am not running the undergravel filter anymore, just the top filter (whisper) and my levels seem to be normal.