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I have an API test and I’m getting zero ammonia, zero nitrite, zero nitrate for my readings. I shook the heck out of the 2nd bottle for my nitrate test like I’m supposed to. Any idea why this is happening? I have no live plants.
Update, got the issue resolved. My kit was actually defective and I have 20 ppm nitrate according to the store test, contacted api and they are sending me a new nitrate test bottle 2