12-24-2007, 03:18 PM
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Ammonia - not typical
Hello all, I'm new here, but not new to keeping fish, but I have something odd going on. I have a 120g tank that has been running for about a month. I have about 75lbs of gravel on under-gravel filters, canister filter with the discharge going in to a wet/dry.
A week after it was up I put in 2 Corydoras from another tank. They did not do well at all, but they looked like they were suffering from ammonia... I didn't test before putting them in, I didn't feel the need. I tested the water and the reading was well above 8ppm, which was as high as my test kit registered. Not believing this could be the issue I picked up another ammonia test kit and got the same results.
The tank has now been running for 3 of its 4 weeks with no fish at all in it and the ammonia is still off the charts... There is no uneaten food in the tank, as nothing had been in there long enough to be fed. I don't understand where this is coming from. I keep thinking it has to go down sooner or later, but so far nothing.