Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
If you are working on the fishless cycle, and adding ammonia, be aware that ammonia is bottled in several strengths. You might have one that is more diluted, so you have to add more before it reaches a concentration that the test kit will react to.
Start with part of a gallon of distilled water (no chloramine). Maybe 1 cup.
Add a teaspoon of ammonia to that and test.
If the kit does not respond to that there is something wrong with the kit.