What is the correct ammonia level?
There is no occasion where any ammonia is tolerable. A level of zero mg/l (ppm) should be maintained at all times.
What do I do if the ammonia level is wrong?
If a level of 0.2 mg/l (ppm) is found, add a filter booster such as Filter Bugs. If a level above this is found, then a substantial water change is essential. Change 25% of the volume for 0.5 – 1.0 mg/l (ppm) ammonia and 50% for ammonia levels above this. Add Zeolite to the filter compartment to remove ammonia. If any amount of ammonia is found, then it is important to check other vital water quality parameters, in particular pH, KH, and nitrite.