- Reaction score
If you can't get a zero reading on ammonia, there is an issue. It's not the test kit.BTW: It seems several folks never get to a zero reading with their API test even when using it on water that couldn't possibly have ammonia in it. I would be willing to bet that low ammonia reading is not affecting your little guy.
That could very well be but another member just a couple of days ago was registering a .25 reading with his test kit. He ran the test on 4 different sources of water. One of them was distilled water. Even that one tested at .25 He got the same .25 reading with all 4 of the samples.