Jkessler623;3954789; said:well if you just set it up than just give it some time
Bderick67;3954803; said:Your tank is still not cycled. It is bad for fish to be kept in nitrite or ammonia levels above .25ppm. For the health of the fish you need to be doing larger more frequent water changes. You can speed up your cycle process by adding some bottled bacteria.
zspidel;3954807; said:ammonia is at 0 and has been the whole time
Bderick67;3954857; said:Note that I said ammonia or nitrite levels. Maybe you would benefit from researching, and gaining an understanding of how the nitrogen cycle works within your aquarium.
As it stands right now you are slowly killing your fish by keeping them in an uncycled tank with dangerous levels of nitrite, regardless of what the ammonia levels are.
blackghostuk;3955008; said:The ammonia is zero because these bacteria are ok, they're converting the ammonia to nitrites as it is produced.
For some reason the other bacteria (nitrite->nitrate) have died off, so the nitrite isnt being converted to nitrate. This is why your nitrite is there, and your nitrate isnt rising. Actually you've probably got a few of these bacteria and you're just waiting for their colony to grow.
So in effect the filter is half way through a cycle, and you need to keep nitrites below about 0.25/as low as possible, as has been said.
You say it was a mature filter. Did you leave it switched off, or without food (ammonia/nitrite) between tanks, or have you rinsed it in tapwater? You've done something to partially kill it.