seangee1
Fish Connoisseur
The fact that you now have nitrite is good because it means you now have the bacteria that converts ammonia to nitrite. (Still bad because nitrite is poisonous). What should happen for the next few days is that the nitrite will increase sharply and the ammonia will quite quickly drop to 0. The bacteria that turn nitrite into nitrate haven't started to grow yet because they need nitrite. But now they can start to develop. That was the reason for suggesting moving the old filter into the new tank, you don't want to lose the bacteria that you have already cultivated.Just checked again, about 12 hours since last check, and now Ammonia is somewhere in between 0 and 0.25. Should I change again, or leave it? Also, Nitrite isn't quite 0, but it's not quite 0.25 either. Nitrate still 0, and pH still 8.0
The reason the whole process takes so long (typically 8-12 weeks) is that your water changes are removing much of the food that the bacteria needs, but you have to do this because otherwise your fish will die. So yes, keep checking and changing water.










