I've always been told that the Api liquid test kit is the best, but I would have to disagree. It always seems to be on point when it comes to ammonia and nitrites but nitrates are another story. I have never been able to get an accurate nitrate reading using these kits. My Nitrates consistently test at 160 ppm and I can assure you that's not correct. My tap water tests at 40-60 ppm even though my water report shows it in the 4-6ppm range. I've tried all the BS shaking of bottle 2, tried no shaking, tried swirling and no matter what, I get 160 ppm. This is also my second kit since I thought the first was defective. Any other suggestions for an accurate, possibly easier to use test kit for nitrates? Don't feel like wasting another $30 to get the same results.
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