Originally Posted by Rak9378
I'm still not 100% convinced. Thren's awesome experiment and the "OTC" reading was for ammonia and I was referring to Nitrite. The color references for Nitrite posted by Rare, which was an awesome find, only goes up to 2ppm. That said, it occurred to me that Dr. Hovanec doesn't disclose the Nitrite concentration he used in that experiment. So I think this is something I will dig into a bit further. Maybe an email to API to see what they have to say about it.
Which paper? The one on nitrospira has the amounts in the graphs of how high nitrites reached. I can't recall the most that was reached off the top of my head.
If you mean another paper I am very, VERY interested in that as I've only read his nitrospira paper.
Someone in the "Getting Started" area coincidentally just had their nitrates so high that they got zeros in test. They did the test three times. Then they did a 50% water change and the test showed 80ish. So if this happens it might be dependent on which test we are talking about.
I can guarantee you that when cycling I have had ammonia levels higher than 16ppm... I have seen the vial so dark green that it was like a deep forest green-black, even darker than my OTC vial. So I'm not sure if there is a point where it zeros out for ammonia.
Also, I need to do some more looking into this weird pH color that I had. I'm starting to feel "suspicious" about it somehow.
Here were today's test results for the cycling tank. No changes today, at all.
94 (not statistically significant difference)
Ammonia ? I didn't test again after earlier test, where it appears to be at least 14ppm