- Jul 20, 2018
- Reaction score
I just upgraded my 20 gallon tank to a 40 gallon. I used the same decorations, my sponge filter and my fluval 206 external power filter in the new tank. I added some new sand and used some of the old sand as well. I used most of the water from the 20 when I set up the 40. However, I took readings today and I had around 2ppm of ammonia, 0 nitrite and 5ppm of nitrates. I did a 50% water change and now the ammonia is at 0.5ppm (I know that doesn’t quite add up, so it’s possible it only started with 1ppm of ammonia.) I also added the rest of the old substrate and the last bit of water it was sitting in. I have one axolotl in the tank right now. Does anyone have advice for re-establishing my cycle, axolotl in?