I set up this 6G tank a week ago with old gravel, some plant cuts and filter material from another tank.
Then, I keep testing the water for a week, the ammonia is always between 0.5ppm to 1ppm with nothing in the tank, NO I didn't add any ammonia in it.
I was curious about other parameters, so I did some test anyway.
nitrite is always sky blue 0 ppm, but nitrate was about 10 ppm 1 day after I set up the tank. No, my tap water has 0 ppm nitrate in it.
This morning, I was scratching my head and decided to take some material from my canister to "reseed" the new tank.
Now, about 10 hours later, I tested my water again, here are the parameters:
Ammonia 0.5 ppm to 1 ppm
Nitrite 0.25 ppm to 0.5 ppm (finally)
Nitrate 20 ppm
I guess the cycling process is finally started. But this still left me with some unanswered questions like, where does the ammonia come from? where did the nitrate come from if there was no nitrite?