nicktrubilla
Aquarium Advice Apprentice
Today is day 15 of having a 20 gallon tank. I set it up in accordance with common cycling knowledge and maintained it correctly. After a two days, I cycled it with the help of two guppies that are still alive and healthy now. When my water and filter was established, I added two mollies. At one point, I would say about four days ago, I had readings of 0 ammonia, 0 nitrite, and a little bit of nitrate so I assumed it was successfully cycled and carried out my first partial water change. Following this I had an ammonia reading of .25 ppm and it has persisted. I'm aware that any ammonia is an issue, but I'm just curious how this happened. I just want to make sure my new dwarf blue gourami is healthy and happy. By the way, I test my water with the API master kit.