01-14-2007, 10:04 AM
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High Nitrite levels
29 Gallon tank stocked with: 2 Dwarf Gouarmis, 16 Tetras, 6 Coryfish, and 3 Mollies.
No real plants are in the tank.
The tank was set up around 3 weeks ago and fish were added relatively quickly (10 days later). Ammonia levels were peaking extremely high (around 2-3) so I was doing daily water changes (50%). At the time, nitrite levels were 0 and Nitrate levels were around 5-10. I went on vacation for 10 days and just returned yesterday. No water changes were done during this time and the fish were only fed twice. I was shocked to see no fish had died. I tested the water and the readings were: Ammonia 0, Nitrite 3-5, Nitrate 30-35.
I know that the Nitrite should be at 0, and I know that I rushed the cycle.
What suggestions do you have? Are high nitrite levels just as bad as ammonia? Would you recommend daily water changes of 50% still? I feed the fish twice a day, is that too much?