Fish In Cycle Aquarium. Fish waste adds ammonia to the water which can kick starts the bacteria growth. If the color stays in the yellow range than the aquarium wont cycle.
The goal during fish in cycling is to keep this color the dull green of the Alert 005 ppm range. With the water changes your fish should be fine. This is because cycling with fish can be seen as cruel as spiking ammonia levels can be damaging to fish health.
Fishless cycle A beginner-friendly and harmless method to cycle your aquarium.
Later once the bacteria have grown you can slowly add more fish of different types. Plus there are several reasons why you shouldnt do it. Once your filter is cycled you will need to add fish slowly to keep the system going. The larger your aquarium the more fish you can include in a fish-in cycle.