Cycling.

[quantumnerd]

How much ammonia is produced per fish, per day, per inch, per gallon of water, in ppm?

Is it around .09 ppm?

 

[Tolak]

This so depends on the fish, feeding, tank temperature, age of fish, health of fish, the list is endless.

Aquatics is in many ways just as much art as science.

 

[Miss Wiggle]

hop over to the scientific forum and look for a topic called 'when is a cycle finished'

there's some interesting discussion in there about how much ammonia fish actually produce.