This was an old post....did you manage to get the Nitrite to zero?
If still not, I'd wait a bit still, or if you have access to Ammonia, dose the tank so that you bring it up to 4ppm, and keep testing the water every day or other day to check the Ammonia and Nitrite levels - repeat the does of Ammonia until both read zero.
Quote:
Originally Posted by Fishmommy3
I have multiple tanks with cycled sponge filters. I set up my 125G with a new filter. I added a bunch of 'dirty filter water' from my other tanks and added one cycled sponge filter.
I checked my water perameters and got the following:
Ammonia 0
Nitrite 1
Nitrate 5
It's been running for almost 3 weeks now. Seeding the tank is supposed to speed up the cycle but my nitrites are stuck on high.
What should I do?
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